Yes, riding rollers from the couple of times I rode them requires your full attention!
Voler makes nice stuff at reasonable prices. Another brand that is often overlooked is Santini. My favorite bibs (Top CX) are no longer made, but I did buy a couple of pairs of the Santini GIT gel shorts (not bibs) for pretty reasonable pricing on Nashbar. Like $35. Though I'm not fond of gel, these are fine. I still like the Top CX pad better, but I don't mind these at all. Bibs also available.
http://www.nashbar.com/bikes/Product_10053_10052_520370_-1___204701