Here's a comparison shot of what the system looks like when placed against a real NES and Sega Genesis. (Jealous they are, but here's the real story...)
Performance: 7 out of 10
The FC 3 Plus still falls short from perfection. Sadly, this system still cannot play Super Mario RPG (SNES), CastleVania 2 or 3 (NES), and has trouble with Mega Man 4 (NES)

However, the FC Twin (NES/SNES) could not play STAR FOX SNES, yet the FC 3 Plus can! So that's just a minor upper advantage
Sound: 5 out of 10.
The SNES and Genesis side of the system is good, but on Streets of Rage 2 on Genesis, the music screws up and doesn't sound anything like the original. When you play an NES game, the sound volume is cut in half and the sound effects on the original Super Mario Bros sound like cheap emulation.
Video quality: 6 out of 10
NES colors are screwy, Mario looks faded out. When I played Donkey Kong Country, there were ugly bars all over the TV that I couldn't get rid of. However, unlike the Gen-X or FC Twin, the colors are much improved when playing Genesis or SNES games.
Overall: 6 out of 10. A nice attempt at making a triple dream come true, but if you have the original systems handy, stick with those. Sure it's nice to have a space saver, but you'll crave the original system more and more.
Recommendations. The best of the best of system clones, is still the "Retro Duo". Perfect sound and playback on all SNES games, but some NES games need work, i still can't believe they screwed up Super Mario 3's BGM. What a disgrace!
Other than these flaws, The FC 3 Plus system is one sweet conversational piece!