Adizero Boston 12 vs Deviate Nitro 4

The Adizero Boston 12 is adidas at its most versatile: a £160 tempo running shoe built to be the one trainer that handles almost everything bar your easy days. It is the rod-equipped middle child of the Adizero family, sitting below the Adios Pro racers but with enough snap to make threshold sessions and long runs feel purposeful. At 267g with a 7mm drop it is not feather-light, and the ride leans firm and direct rather than soft and forgiving. That is the point. Push the pace and the Boston rewards you with a propulsive, slightly aggressive roll through toe-off. Jog it slowly and it can feel stiff and a touch dead underfoot. In our view this is a do-it-all daily trainer for committed runners who like a firmer, faster shoe, and a genuinely capable marathon training partner. The newer Adizero Boston 13 softens and lightens the formula if this version reads too stiff for you.

Puma cut the Deviate Nitro 4's RRP to £150, £10 under version 3, and made it a friendlier shoe while it was at it. Reviewers agree it's the best-fitting Deviate so far: the upper has more give, and the midsole feels softer on easy runs yet still picks up when you push. Think of it as a carbon-plated daily training shoe and tempo shoe rather than a marathon racer. It sits lower than most super trainers, and on paper its 7mm drop is lower than the old model's too. What it lacks is a bit of excitement. One UK review panel liked it but felt rivals such as the Adizero EVO SL are springier, and lab testing found the heel much less lively than the forefoot. We rate it a very good all-rounder, a step behind the best in its class.