I have a $4000 recumbent Lifecycle and I never use it. Big waste of money, but the Nashbar roller trainer I do use. Roller trainers are pretty fracken tricky to learn, but once you get used to them, they are great.

However, I have to but a bike computer 'cause my GPS says I'm not moving. I am using platform pedals right now because I'm not sure I'm ready for my SPDs on the rollers yet. Put a TV in front of them and pop in a tape of the TdF or something, they sell tapes and DVDs of scenery so you can pretend your riding through the countryside.

I get a better workout on the rollers because they don't let you coast for prolonged periods.