develop the middle one into something, it's alright as is, but it's a bit boring. If you developed the middle one into something more it could be way nice.

dude im really feelin` this!
i love the middle one. the colors and shapes work for me.
i do think some minor detailing would look good. but that could take away from its sexyness. wish i could elaborate on that or somethin`

i like it. whatever.
im stoned.

eh... you can do better