FuelCell Rebel 4 vs Endorphin Speed 4

The FuelCell Rebel v4 is New Balance at its most fun: a lightweight, plateless tempo shoe built to make quick running feel easy. At 212g it is properly light, and there is no carbon plate here, so the pop comes straight from a soft, springy FuelCell midsole rather than a stiff propulsion board. That makes it one of the more versatile speed shoes going. You can rip a session in it, float through a steady long run, then use it as a do-everything daily trainer the next morning. It sits in that sweet spot between a cushioned daily and a race shoe, and it does it for a fair RRP. If you want a single pair to cover most of your mileage without buying a rotation, this is a strong pick. The newer Rebel v5 has since arrived, so the v4 is often the smarter buy on price. Just do not expect the locked-in, aggressive feel of a plated racer. This one is about bounce and freedom, not rigidity.

The Saucony Endorphin Speed 4 is the do-everything plated trainer, and one of the most complete running shoes in its class. At 233g with an 8mm drop it sits in the sweet spot between a cushioned daily trainer and a stripped-back race shoe, so one pair covers your tempo days, your long runs and the odd parkrun. The plate gives you a gentle nudge through toe-off without the aggressive, all-or-nothing feel of a full carbon racer, which is exactly why so many runners keep coming back to it. We rate it as the shoe to reach for when you want speed without committing to a dedicated marathon shoe. It is not the cheapest tempo option at RRP, and the plusher Endorphin Speed 5 has since taken over the line, but the Speed 4 remains a brilliant buy when it drops in price. If you want the plate but not the price, this is the one to watch.