I was intrigued by the CPT 2 model and bought a used one in December for $200, figuring that even w/repair it probably was a good deal. I sent it to Scanmar and their CPT guy said the unit was toast and would take about a grand to fix. I balked and they sent it back.
Then I bought another used one and purchased some of the parts from Scanmar...pretty pricey, but I was willing to pay double for belts, etc. in the interest of supporting what seems to be a customer friendly business. I still have not hooked it up. I am having trouble with the J bolts, which hook on the wheel - they keep hitting my transmission lever. I tried Scanmar for assistance, but they were not helpful. My guess was that I am perceived as a low rent customer (IMO).
I did quite a bit of rersearch prior to the purchase and the units seem quite good. I agree with the business assessment made in the prior posts. Keith (their CPT guy) was a bit of a wise ass, and I did not get a warm and fuzzy feeling dealing with him.