For me it would have to be the GENOS. Since I don't have to lug the thing around...it looks like a fun keyboard to explore.
Remember guys...this is a free keyboard. Maybe if I win the 900 million dollar Mega Millions jackpot on Friday...I might be the rich dude!!!
When you put it that way, I would say Genos since that would be the one I would be least likely to buy because of the price.