PowerTap Disc Brake Hub MTB

[Imtb]

Sold my Cervelo R3 as I was only using it to train for mountain biking. I have a PowerTap Pro which is built into a DT Swiss RR 1.1 wheel. Have just bought a Niner and am considering getting an extra wheel set with slicks to use an SL+ MTB PowerTap.

 

Which would be more beneficial/cost effective...use my PowerTap Pro (wired) on a cheap road bike or are there second hand Disc PowerTaps out there? I do train on the road a couple of times a week, but rest is off road. How important is it to get power stats from a mountain bike race? I would probably only use the heavier PT wheel on less important races.

 

Any ideas, advice?

Edited February 4, 2011 by Imtb