Debating what to buy psvita or new 3ds xl

Looking into getting a handheld to mod i want something easy to mod so I don't have to solder (even if I'm capable)

I want to emulate ps2 games like the Simpsons hit and run or gta vice city but I also am looking more into emulating the Genesis and snes for the sonic games and Mario world

Obviously I'll play the games native to the consoles respectively aswell and I'd play more than what's listed but these are the best examples I can give

Asking someone who has experience with these consoles as they're expensive and I don't want to waste money when the other is better