Originally Posted by
ShortLegCyclist
Yeah, I test rode a Troll with discs and it was definitely odd and a tad disturbing to be going on a downhill and look down and see two bare brake posts sitting there!
Well, how often will you be commuting in bad weather and/or going down extended steep downhills? Those are the two situations where discs would be desirable IMO.
+1
That is the main question. I'm annoyed by the screeching of my discs when some crap gets on the rotors. They clean themselves off eventually. Also, just removing and replacing a wheel can throw the caliper alignment off enough to cause some rubbing unless your careful to make sure the QR is the same tightness as before you removed it. Some people count the turns when removing the wheel. My discs are mechanicals though. Others folks swear by hydros and I've never tried those.
The important thing is that they stop the wheel from turning in all conditions. If that's what you want then they are better choice than any rim brake.