Just took a gander at the '14 DA2. The integrated the front brake! Looks nice. I’d imagine regarding wheels, what you see is what you get. I have a couple of friends with Felts and they love them.
Cervelo might have an aero edge but I’d imagine it’s pretty darn close. So long as spec levels are similar for the same price, go with one that has your preferred color
I have a 2014 Felt DA4. I immediately tried to improve the braking but could only get it adequate. Instead of accepting it and hoping it will work, I used a Problem Solvers Travel Agent inline by the stem. It won’t fit at the brake. This doubled my cable pull and allowed me to use the tightest spring setting. I have great actuation too. I highly suggest this to those that have a Felt DA. The bike is great and looks fantastic with my PT Zipp Disc on the back. Here is a pic of the part I used.
I posted some pics on this forum. In retrospect, I should have ordered the one without the barrel adjuster but it was the only one in stock at my LBS. Again, this works great. I’m sure I wasn’t the first to think of it.