I have an M5 pro at work, and certain things are a smidge faster than my personal M1 Max, but they're pretty close overall.
Given how much more you can get buying used versus new, I'd go used unless there's some feature/characteristic only the new hardware has.
Having said that, I could see stuff slowing down over time with OS updates/etc. I've had my M1 air for a while, and some UI stuff was slower after specific updates (I think glass in particular).
Given how much more you can get buying used versus new, I'd go used unless there's some feature/characteristic only the new hardware has.
Having said that, I could see stuff slowing down over time with OS updates/etc. I've had my M1 air for a while, and some UI stuff was slower after specific updates (I think glass in particular).