http://www.k1gba.com/gba-console-team-h -p-37.html
This is not your run-of-the-sweatshop DealExtreme GBA clone. It's a fully reverse-engineered version of the Gameboy Advance (only does GBA functionality, but it supports emulators). It plays cartridges natively as well as using a special flash cartridge that comes with the system for ROMS. I'm curious about how it the sound processing is, because since everything else about it seems to be almost superior to the real GBA hardware. It's $70, and I might drop the cash on it to see how clear and true the sound is.
Anyone else interested in this thing? It even does TV out.