Gameduino vs Gameduino 2 vs Uzebox

Ive been wanting to have a little retro console i could programme my own games on to and i wanted to ask (cuz i dont really understand) wich of these 3 consoles would be the best for old-school platformer games. Maybe some of you have used them? What were your impressions? What can you say about the difficulty and what would i need to know?