Retro Nintendo

Started using mine again recently after discovering I didn't have room for the nes, snes, and ps2 on the spare tv.  Put this little thing out and still have room for the old bulky ps2.  So far, it has played everything I've tried.  The nes side is a little off audio wise, but the snes is really good.  Super Metroid hung up on me, but that could be cause of dirty contacts.  It took a few tries before the duo would load the cart.  Not bad for the price, but I hope they improve on the nes side for the next release.  Anyone else using a duo or fc twin?  I think there's even an fc trio now that adds the genesis.