Felt DA (2008) or Columbus TT3/Chrono (2008/2009)

Hey. I'm getting my first tempobike for triathlons, and I'm choosing between three used bikes, and I'd like some help with the choice. They're all priced the same, would love some comments on the bikes or brands in general.

1. Felt DA, 2008 (no wheels)

2. Columbus Crono 2008

3. Columbus TT3 2009

The Columbus bikes comes with Pro-lite (disc as back) wheels, and the Felt DA without, so I would have to buy a pair of wheels for it as an additional cost. Is the Felt superior to the Columbus, or is it pretty much the same so to speak? Thanks =)