Which bike Kuota or Cervelo?

You could always go to the shop again and make them do some work on getting the Cervelo to fit you better and see if you like it.  Make it clear to the guy there that this bike didn't fit as well as another you rode, and because of that you are leaning towards the other one.

I personally like the look of the K-Factor, so if it fits, I would probably consider that one pretty strongly.

I'm not a Kuota expert, but I have seen reports of some of their models having a "less aero" and more upright positioning which gives a lot more comfort at some expense of aero speed. I think the argument for this design is that for longer races, and likely most non-elite competitors, racers may benefit from a more comfortable position than a super-aggressive position which you can't sustain for the hours on end required for longer races.

 That said, knee impact with the chest does suggest an improper fit, which will make it hard to assess the bikes. I'd get them to at least do a rough fit with the Cervelo for you - if you're going to drop $$$ on a bike, you deserve the pro service.

I had a P2C and now have a Kalibur.  Personally, I like the Kuota better than the Cervelo.  Just feels more solid overall, and I'm actually faster on the Kalibur than I was on the P2C.  

Cockpits are easily swapped and a proper bike fit will put them in the right angle and position.  The big difference is the top tube length and how comfortable you are in the distance from your seat to the fork.  If you're too stretched out or too compacted, each will have various effects on your ability (and willingness) to stay in the aero position.

If you're judging the P2SL vs the K-Factor, I'd swing the vote towards the carbon K-factor simply because it will feel better on longer rides because of the shock-reducing capabilities of a carbon frame.

As a word of caution, I'm not sure how advisable it is to buy a new bike only 4 weeks out from your race.  If you haven't had a chance to do any long rides on it, you may be asking for a heap of trouble on race day.  But I've also known people who buy a new bike the day before an Ironman and set a blistering PR. 

If you are interested in the Cervelo, see if they will set it up for you. You didn't mention which cervelo. I have heard the P3C doesn't fit some riders very well.

Keep in mind that the frame contributes, at most, 5 percent of your total drag. That means you don't shave off any minutes on an uncomfortable bike. If you are uncomfortable on the Cervelo, it will be a slower ride.

Is that correct?  Only 5 %?

Thanks for the feedback guys!

Yeah, midland is definately a haul.  I currently ride a Kuota K-Factor SL that I got from Fort Worth Cycling and Fitness.  This isn't going to help you with the choice between the two bikes, but if you do go with the Kuota, I would recommend going there and talking to James.  He did a very extensive fitting with me on the K-factor.  If you call him, or plano or richardson, they will be able to tell you if they can, and are willing to change out the bars.  Also, I know its not that much, but driving from midland it will save you an hour + to go to Fort Worth Cycling and Fitness, rather than out to plano or richardson.  Good luck with your decision.

Thank you all for your thoughts and advise.  I've ordered the Kuota K-factor SL.  they are changing out the aerobars for me, and it is supposed to ship today.  Sean did some pretty extensive fitting for me, and he's going to mark the seatpost and the handlebar height for me before it ships.  So I've pretty much have a 'fitted' bike on its way.

Thanks again, you advice helped a bunch.

Bummer about Richardson Bike Mart.  They could have sold me  that Cervelo P2C if they had fit it correctly.  (but perhaps that's no possible eh?)

I can hardly wait for my new bike!