Which one felt the best when you took it for a ride?

Observations from the mfr's websites:

The Raleigh Grand Sport 04/05 has a Sora rear; The Giant has a sora rear. Trek has the better Tiagra for '05.

The Raleigh has rims in the "trekking/cyclocross" category vs. the Trek's which are in the "road" category. The trek's rims are lighter. I'd pick the rims in the "road" category if I wanted to go fast like say, in a triathlon I can't tell which specific rims the Giant comes with.

Trek comes in more sizes compared to Giant (didn't compare it to Raleigh) however if you fit one of the sizes these bikes come in then this is a moot point.

I'm not a triathlete so this stuff may not matter to you...