i agree. my balance sucks so i really have to concentrate on the rollers to stay up, but they help my spin and ithey're fun enough that it at least gives me a tiny bit of my riding fix for the day if it's too ****ty to go out. the trainer on the other hand gives me a least a little bit of resistance to play with to build a little muscle. its not as fun, but i can do it while watching a movie or reading or something so i don't feel like such a schlub sitting on my butt doin' nothing. I picked both mine up off craigslist for a song--i think $30 for the rollers and $60 for a magnetic trainer, both lightly used. as was mentioned before, you definitely want to put your fixie up in the trainer mounts before buying it, my old bike just barely fits and I haven't tried my new one yet...let's hope.