There was only a few NES games that I really liked and I'm bored of those. For the SNES I find emulation perfect with no issues so probably wouldn't buy one of those either but have to say I've never been that happy with N64 emulation, maybe because of glitches or the lack of a correct N64 controller and feel I would almost definitely buy a N64 classic with Mario 64, Zeldas, Pilotwings and quite a few others. Also N64 games stand up quite well. Mario 64 is still an amazingly playable game today that looks very nice.