yeah i just bought it recently and like i said it was really worth it..the 1gb sd card that comes with it is more than enough for a good collection nes and snes roms..and getting emulators that support sd cards to work is as easy as copy and paste..currently i have tried nes and snes.
Nes emulation for the most part is good although some high ptiched sounds dont seem to come out right such as the sound when mario collects coins does sound a bit off but aside from that its good.
http://gcemu.dcemu.co.uk/fce-ultra-v1-0 ... 60210.html
Snes however is just perfect i couldn belive the quality of the sound and there is almost perfect framerate and the emulator allows saving on the sd card. Only downside is that you might need to adjust your joypad settings if you use a gamecube controller but thats just nit picking really.
http://gcemu.dcemu.co.uk/snes9xgx-v2-0-1b6a-65384.html
there is also a turbografx emulator that supports sd cards but i have yet to try it (been to busy with the snes emu)
im going to try out more emulators soon tho