Supernova Prima 1 vs Glycerin 21

The Supernova Prima is adidas leaning all the way into soft, protective cushioning: a deeply padded max-cushion running shoe built for easy miles and long, gentle recovery days rather than speed. It sits above the daily Supernova Rise in the range, trading a little snap for a plusher, more forgiving ride underfoot. At 290g it is on the heavier side of the category, and with no plate and an 8mm drop this is a comfort trainer first and foremost, not a tempo tool. What you get for the £160 RRP is a smooth, cushioned road shoe that soaks up the pounding on higher-mileage weeks and keeps your legs feeling fresh. We rate it as a specialist rather than an all-rounder. If you want one shoe to do easy days and workouts, look elsewhere. If you want a dedicated cruiser for long, relaxed miles, it makes a strong case.

The Brooks Glycerin 21 is a max-cushion daily training shoe built for one job: making your everyday miles feel soft, calm and comfortable. This is the plush end of the Brooks range, a neutral running shoe that leans into cushioning rather than speed. At 280g it is not light, and it will not snap you through a fast finish, but that was never the point. What you get is a deep, forgiving underfoot feel that holds up well over long easy runs and recovery days, and a 10mm drop that suits heel and midfoot strikers alike. We rate it as a dependable cruiser for runners who want protection and a smooth, quiet ride over anything sharp or racy. If the £165 price gives you pause, the cheaper Brooks Ghost 16 covers similar daily duty with a touch less plush. But if soft comfort is what you are after, the Glycerin delivers it honestly.