Two big thumbs up from me for a really sensible thought out post!
Strangely -given it seems to be generally thought that Avid mtb discs are easier to setup than road ones -I had similar issues of disc rub, but only with the mtb versions. For whatever reason the road ones were so much easier to setup and consistent than my mtb ones.
Originally Posted by
Richbiker
I've owned 3 different bikes equipped with Avid BB7 mechanical disk brakes:
-A Spicer ti cyclocross/touring frame;
-A Spicer ti tandem
-A Jamis Dakar team mountain bike (1997, without disk tabs, so I used an A2z adapter on the rear dropout).
So I didn't start out as a disk brake skeptic, but in fact was pretty openly enthusiastic about them.
I no longer own the Spicer cyclocross or the Jamis. I still own the tandem, but recently switched out the disk brake setup for Tektro mini-v brakes.
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And thus endeth my optimistic experiment with disk brakes.
Rich