Andy,
I started a thread a while ago about my decision in buying a CompuTrainer, you might want to look it up.
I have been riding mine for a little over a month now and I love it. It has helped me ALOT in maintaining consistency.
Due to the regimen that my coach has me on however, I simply ride the basic CT most of the time and rarely if ever use the 3d stuff.
I am now learning to set-up the coaching software for the testing I need to do (ergo regimens), but don't own the software yet, so I can't save things off.
Anyway, I have never been much for indoor riding, and that is all I am doing now. Might be more a statement of my focus, than the wonder of CT, but I would be nowhere without the CT as a regular trainer is simply boring now.