N64, and this is the one I actually grew up with. They took a chance, they fucked up by making an alien spaceship three-pronged dildoesque monstrosity, that wore out at mach speed - especially by normal gameplay in certain (coughMarioParty1cough) games. While I have tons of love and nostalgia for N64 and several games on it, it can't excuse the controller itself.
New Vegas is notable for not being a Bethesda game per se. It uses something very close to the Fallout 3 engine, but the actual content has little to do with Bethesda. They did publish it, though.