BROL is a great place to ask about his as gcottay mentioned. Lowracers tend to be much more expensive than highracers, though at the upper end of both the prices converge. Lowracers are considered to be worse for climbing than highracers.

The right answer is test ride, test ride, test ride. I am picking up my new Bacchetta Corsa (highracer) on Saturday morning so I empathize with your desire to pick a bike already.