I thought sure touch keyboard was the best then PCM then SBP Full keyboard free by the way. Now without a doubt its the new keyboard zoomboard, it cost i thinks like ten bucks but totally worth it in my oppinion. I have yet to make a mistake well maybe one or two. But i can type as fast on it as a qwerty hard button keyboard not necessarily with one hand but certainly way better then any other on screen keyboard. Just google zoomboard....