Really, I purchased a Caadx five weeks ago and find the brakes great and way better than my old cantilever bike, not sure how much more stopping power anyone would need.What are you going to build this time? I picked up an absolutely Mint 52cm Cannondale CAADX on Tuesday, to replace my own 54cm CAADX. I have always found mine to be just slightly too big for me. I have been looking for months as I wanted the 'older' Cantilever model as opposed to the current Mechanical Disc model. I have a few friends that have the disc model and they are not too impressed.
I'm very happy with it I must admit and given I'm back to biking after 20 years can't believe how fast it is if that makes sense. I have the 105 model and short of changing the pedals I think I may just leave it as it is.I suppose it's just preference at the end of the day. Most Discs are going to have better stopping power than a rim brake (if set-up correctly), especially in the wet. My Canti's scare me in the rain! I don't think the stopping power was their gripe, just the excessive lever travel and noise from the pads rubbing after a while. The TRP HY/RD are supposed to be good though, as they have cables like a mechanical disc, but the caliper is hydraulic. Very expensive too. Another friend as the Caadx Ultegra model which has fully hydraulic Discs and they are apparently excellent. The Caadx is a great bike though isn't it
If only I was still young enough mate, I'm 55 this year. Pretty fit for my age but my knees tell me I'm not getting any younger. Still I've already lost weight and done a good few miles at a half decent pace and am really enjoying it.I like the confidence it gives you to ride on any type of surface without worrying than your wheels will buckle, or your skinny race tyres will go pop at any minute. I found the original Cross tyres (Swalbe Sammy Slick) to be a bit soft and prone to puncturing so I tried a set of puncture proof road tyres for a while thinking they would be faster, but have now gone back to Continental Cross tyres but a little narrower (32c). The speed difference is marginal, and a small price to pay for having the option of changing from a smooth to rough surface whenever you feel like it. I even tried a Cyclocross race this year and it was great fun, with the bike suffering no damage at all. My legs and lungs didn't fare so well though. Find yourself some dirt and ride it hard. It's amazing how tough a Cross bike is compared to a lightweight race bike, and it's nice not to worry about motorists too.
Enjoy your rides