At the same price, the longer warranty is a meaningful advantage for the new 750D. A 5-year warranty gives more protection, and it may also help resale value later. By contrast, a 6-month warranty on the used 760D offers much less coverage.

That said, warranty value depends on how you’ll use the camera. Many common problems are not covered anyway, such as water ingress, impact damage, excessive vibration, third-party modifications, fungus from poor storage, or harsh environments. If your intended use risks that kind of damage, warranty length matters less.

So the decision comes down to this: if the 760D’s extra features are genuinely useful to you, it may still be worth considering. If not, the new 750D is the safer buy because of the much longer warranty and likely better peace of mind.

Best practical advice: handle both in person if possible and decide whether the 760D’s added controls/features are worth giving up the extra coverage.