Questions regarding new 3DS homebrew

I am planning on purchasing a new 3DS soon, and know what some homebrew runs best on the new 3DS.

So, now that I'm upgrading, what do you suggest I can be able to do now? What emulators or homebrew run much better than on the old 3DS? Can I run Genesis fullspeed? CD and 32x? SNES? GBA? N64? PS1?

Thank you!