Asics Metaspeed Sky Plus vs On Cloudmonster 3 Hyper LightSpray: Two Premium Max Cushion Trainers Compared

Introduction

Premium max cushion daily trainers have quietly become the most interesting category in running shoes. They promise to do a bit of everything: long run comfort, daily mileage duty, and even enough snap for faster workouts. Two shoes sit at the top of that pile right now: the Asics Metaspeed Sky Plus (also referred to as the Megablast) and the On Cloudmonster 3 Hyper LightSpray.

Both are high-stack, surprisingly light super trainers, and both earned praise across multiple testers. They are, however, very different shoes on the foot, and the differences matter more than the similarities. Here is how they compare across fit, ride, stability, and value, so you can decide which one belongs in your rotation.

Fit: A Clear Divide

Fit is where these two shoes split most sharply. The Metaspeed Sky Plus runs true to size for most testers and is easy to get on, roomy, airy, and comfortable, with plenty of toe box wiggle room, a secure lockdown, and padded heel collars. One tester noted it feels slightly more tapered around the toes than many Asics shoes, so runners who get rubbed by a narrower front may want to check that, but the midfoot hold is excellent for faster sessions.

The Cloudmonster 3 Hyper LightSpray is a different story. Its ultralight LightSpray upper cannot be adjusted, and it either fits your foot or it does not. One tester with high insteps and relatively wide feet genuinely struggled to get the shoe on even half a size up, while another with a narrow foot and low arches found it fit beautifully in their normal size with a barely-there, sock-like feel. A third tester found success going half a size up. The practical advice: try the LightSpray upper on before buying if you possibly can, and consider playing with your sizing.

Ride Feel: Bouncy Versus Rockered

On the run, the Metaspeed Sky Plus is big, soft, and bouncy, with high cushioning, lots of midsole compression, and generous protection and spring back. It feels like a lot of shoe on the foot, and it is livelier than its stack suggests. The ride pushes you up onto your toes and speeds up heel-to-toe transitions. The trade-off: easing off into slower paces feels slightly awkward, and the plush midsole brings a touch of heel instability.

The Cloudmonster 3 Hyper LightSpray is firmer and more immediate, with more road feedback, especially under the forefoot. Its rocker profile rolls you smoothly from heel strike through toe-off, snappier and encouraging of faster turnover. It is also notably the more stable shoe: the CloudTec foam framing the Helion HF midsole keeps both sides of the foot supported, so it never feels like you are standing on a big wedge of foam, even though the stack is high.

In short, you are choosing between a softer, springier ride in the Asics and a rolling, rockered, snappy setup in the On. The Cloudmonster is arguably the better pick from mid-pace up to faster running, while the Megablast handles a broader range of paces with more comfort over the long haul.

Stability and Weight

Both shoes sit at the lighter end of the max cushion scale, which is a big part of their appeal. The On is the lighter of the two, and that really shows at speed: on track reps, strides, and short intervals, the featherweight LightSpray upper and light build help your feet turn over quickly. The Megablast is not heavy, but it does feel like a bigger shoe on the foot during all-out efforts, especially for runners with a high-cadence, shuffle-style stride.

On stability, the Cloudmonster 3 Hyper LightSpray is exceptional for a high-stack super trainer, and testers consistently flagged it as the more stable shoe of the pair. The Metaspeed Sky Plus has a wide base and is reasonably stable for its size, including over very long runs like a 22-miler, but the plush midsole adds a slight wobble at the heel. If super trainers have felt too unstable for you in the past, the On addresses that concern directly.

Durability and Outsole Coverage

Both shoes held up well in testing, with no concerning wear patterns, and grip was strong on both. The difference is coverage: the Cloudmonster 3 Hyper LightSpray has notably more outsole rubber coverage than the Megablast, which is consistent with On’s generally well-covered outsoles. If long-term outsole durability and grip coverage are priorities, the On has the edge on paper, though neither shoe showed bad wear during testing.

Which One Should You Buy?

The biggest difference between these two shoes may be the price. The Metaspeed Sky Plus is already one of the more expensive shoes on the market, and the Cloudmonster 3 Hyper LightSpray is significantly more expensive still. That alone tips several testers toward the Asics, which delivers a comparable level of performance and, arguably, a more versatile and comfortable ride for less money.

Go with the Asics Metaspeed Sky Plus if you want maximum versatility, a bouncier and livelier midsole, a traditional laced upper with a forgiving fit, and better value. Go with the On Cloudmonster 3 Hyper LightSpray if you can accept the price, your foot works with the LightSpray upper, and you prioritize the lightest possible build with the best stability in a high-stack super trainer. Note that the standard Cloudmonster 3 Hyper, which does use a more traditional upper, runs differently, with a heavier, less smooth and bouncy midsole setup, so it is not a simple substitute for this LightSpray version.

Conclusion

These are two of the most versatile premium super trainers available, and both can genuinely cover easy miles, long runs, and faster workouts. The Metaspeed Sky Plus offers more comfort, more bounce, a friendlier fit, and better value, making it the pick for most runners. The Cloudmonster 3 Hyper LightSpray is a superb, ultra-light, exceptionally stable alternative for those willing to pay a premium and lucky enough to suit its upper. Choose based on your foot shape, your priorities, and your budget, and either shoe can anchor a rotation.