I tried not to get involved. But let's dispel two anti-disc myths:
- Disc brakes aren't hard to maintain. In fact, if you keep your bike long enough, cable-actuated brakes require more maintenance. Hydraulic road discs, in my experience over the last five years, require zero maintenance if set up properly. Cables eventually fray, stretch, and break. I've never had to maintain a road disc except to replace pads (the same as I would a rim brake).
- Disc brake setups don't weigh that much more. Check the figures on last year's BMC TeamMachine. The disc brake version weighed something like 30g more than the rim brake version. 30g is nothing -- one bite off an energy bar.