I really like my rollers. I'm pretty new to road biking, but it hasn't been too hard to get used to them. I bought the Nashbar Reduced Radius Rollers and I love them. They're discontinued though, which worries me a little bit.
I think if I wasn't a poor, married college student, I would like to have a trainer and rollers. I had the choice of one or the other, and I chose rollers because they not only give you a good work out, but they help to perfect your technique. I am really glad I chose rollers, for what it's worth ($0.02?).
You should be able to get either rollers or a trainer for under $150 or $200. If you get rollers, get aluminum drums. I've heard horror stories about plastic drums. Good luck, and try to get outside this Winter, in addition to your indoor training.
+1 on keeping your beater bike on the trainer and ride your good bike on the rollers.