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Optimus Raider is actually one of the better NES emulators out there, the design makes it a good handheld gaming device, also the games don't lag or play slow on it, there are others out there that have this problem.
We sell 8GB models on MP4 Nation, they are currently $100, they look like 2nd gen iPod Nanos, but to be honest, i would recommend saving up an extra $45 and get the Meizu M3 Music card, it is so much better. If you intend on actually filling your player with 8GB worth of music, you will want a method to organize, sort and have playlists, none of the nano clones or other chipods can do this, but Meizu players can.
I was looking at Tiny deals, i think they may be misrepresenting their screen types, if their screen is only able to display 65k colors, then this is a CSTN LCD screen and not TFT LCD, there is a big difference between the two as far as video quality goes. CSTN are able to display 65K color and the picture is usually duller and not that sharp. TFT screens show anywhere from 260K to 16Mil (depending on what type of TFT), the screens are sharp and bright.
IMO always get a TFT or better screen, do not get a CSTN 65K screen, they are outdated and no way near as nice.