Oh boi, where do i start? *inhales*
Who the heck actually wants an atari these days, as most of those games are easily emulated, people only would want a dreamcast for the sonic adventure games, why get a wii AND a gamecube as the wii u emulates both completely, gameboy, NES and SNES is also super easily emulated, who actually played a sega genises for anything other than sonic? (Might be a few good games, never had one) PS1? Id get a PS2 first as it has better games and can emulate most ps1 games, however not a bad choice, and i still play mine. Xbox 360? Same deal with ps1, rather get a one as it emulates most games, but if your fav game isnt backwards compatible, i dont see why not. 2ds, thats ONLY if money is an issue, if not just get a 3ds.
One more thing, every person ik irl has a switch and plays on it nonstop, even my non gamer gf.
Sorry that was a lot to read. I honestly do respect most of those options as i have 5 of those things myself. (Dont understand gamecube at all since wii is there though)