I got a great deal on a Computrainer 3D this summer and I am thinking of selling it now that the fall is approaching and they are fetching good prices on eBay. I quite like the idea of being able to setup workout files and I have used this for intervals. However, it's a lot of money to have tied up and I'm not sure if it add's much value over and above what I can do with my Powertap and fluid trainer. I have also played with the Spinscan but I am not convinced of it's value either. Finally I don't have a big need to ride simulated courses. Opinions?