I just bought an Allez Sport. I love it. The Trek is also a good bike. I compared my Allez back to back with a Cannondale, and the Allez just felt like home. The fact it was $400 cheaper didn't hurt either. But honestly, I so wanted to buy a Cannondale, I found myself making excuses for it. In the end, I couldn't lie to myself. The Specialized felt better.

For what it's worth.

I say ride the two back to back and make your choice. So much of it's personal, and honestly, I don't think you can go wrong with either.

Good luck with your choice.