Originally Posted by
hardlined
I'm also having this dilemma, though I haven't been looking at that many treks. Mostly comparing the Caad9-4 to say a Synapse Carbon 5. Still can't decide which one I like. I took both for a quick test ride and they didn't feel much different. Synapse was more upright, but supposedly the aluminum frame is supposed to be a little harsh? Like I said short test ride, I couldn't tell.
Take a longer test ride. If you're going to drop $1700+ for a bike, you're entitled to enough data to make an informed personal decision.
Then, once you've done that, test ride them both again with your own wheels and (if it floats your boat) 25c tires to see how much that might take any edge off the aluminum frame.