Adizero Adios Pro 4 vs Endorphin Pro 5

Reviewers mostly liked how the Adios Pro 4 runs, and their complaints were about their toes. On speed they're close to unanimous: softer and bouncier than the Pro 3, a lot lighter, and properly quick once you're at 10k to marathon effort. The Run Testers found it lighter and cheaper than the Alphafly 3, if a little less springy. On fit, the toe box tapers, it runs a little short, and several testers had sore toes by the end of a marathon. So this is a carbon racing shoe for neutral runners with normal to narrow feet who race with some intent, from 5k up to the full distance. It's less happy at jogging pace or under a heavy heel strike. The newer Adios Pro 5 has a lower RRP and more padding at the heel, so check the price table before paying full whack for the older shoe.

Most carbon racers ask for a steady foot. Saucony built the Endorphin Pro 5 for runners who find them a bit wobbly. It's a carbon racing shoe with a slotted plate and PWRRUN PB foam, and at a listed 206g it isn't among the lightest super shoes. In return you get a planted, guided ride. Reviewers rate it most highly between 5K and half marathon pace, and plenty of club runners will happily take it through a marathon. Fordy Runs sees it as a race shoe for everyday runners rather than elites. Believe in the Run was cooler: it found the shoe barely changed from the Endorphin Pro 4 and missing the pop of the best race shoes. The two views don't really clash. If you want Saucony's most aggressive racer, that's the Endorphin Elite 3. If you'd rather have a stable, hard-wearing race shoe you can also train in, the Pro 5 is one of the easier ones to get along with.