Out of those two or any more you are looking at in that price range I would get the one that fits the best. I looked at the components on both of them and they are pretty similar...main difference being the sram rear derailleur and shifters on the Cdale vs shimano rear derailleur and shifters on the trek. What prices did you get on both of those? I'm not sure how much the cdale is but the msrp on that 4300 disc is $599. I don't know if you have tried out the gary fisher's but they have a bike in that range msrp $559, the Wahoo, that comes with a little better components on it...fork- rock shox dart 1, RD- shimano deore, and FD-shimano acera to name a few. I think if you look around a little more you could find something with better components at that price. But the thing that matters the most is the fit.