I also vote for CycleOps, since that's my trainer.

Quote Originally Posted by CyborgQueen
Can I still use the trainer without clipless pedals?
Yes, you can. But with clipless pedals you can pedal at high RPM more easily. It's worth the investment.

Not all clipless pedals & shoes are so expensive. I got mine about GBP 50-60 in total for both (bought them from UK when the pound was low).