Help me pick a bike

Frankly, I don't know how you could go wrong with either of those. I personally own a Felt. But, I was down to 3 bikes like yourself and it really came down to how they felt (no pun intended) and fit. The bike shop let me test ride all 3. They also steered me in the direction of the bike that was the best fit for my build. Isn't Cannondale HQ'd right up there near you?

Its a lot of fun and please let us know what you decided.

Yeah, it's about two hours from where I live. I'm still a few weeks away from buying it. I defintely want to ride all three to see which one i I feel best on.

All nice bikes but look at the Cervelo Soloist before you buy. Awesome bike.

And Cervelo's Dual. Best tri-bike for the buck.

All three are pretty much in the same price range.
The QR Kilo and Felt S32 are tri specific with aero bar shifters and aero brake levers
The Cannondale 600 has, probably, the stiffest bottom bracket of the three...for stronger cyclists.
Check out the Cervélo One and maybe even the Dual, which is $300 more.