I've had a Computrainer for 6 or 7 years and it's mostly been a great trainer. This said, I seriously considered replacing it this winter with a CycleOps Pro.

I didn't for a few reasons - I bought a power meter that was about what the trainer would have cost and decided to use my old road bike set up as a tri bike on the trainer and not sure if I could get the setup I wanted with the CycleOps.

I've heard they are great, but haven't used one personally. The Computrainer I think is getting better and better. As far as I know, you can upload data to Training Peaks (I know the CT can, expect the CO can since it uses the Power Tap).

From a cost standpoint, the Computrainer would probably be less, there seems to always be a new one or nearly new one for sale and even the new ones in stores are less.

I'll let others comment about the Power Tap option...

Hope this helps,
-Chris

Neither, go to www.1UPUSA.com for the best trainer in the market. An engineering marvel.