I mostly like the first one, but that seat is too flat. Give the throttle a good flick and you'd slide right of the back. Exhaust looks like it'd cook this hell out of your leg too.
Second one is okay, though I've never been a fan of that style of angled up exhaust. Also the decision to leave an awkward void in the middle of the pike without the side panels isn't doing it any favors. It looks like an afterthought even though I'm sure they put a lot of work in to clean that up.
Third one is...meh, and art piece at best. Where the ***k did the radiator go?