I just bought Travel-Trac rollers from performance bike. I am new to rollers so I cant compare to other brands. I have done 4, 1/2 hour sessions and they work well enough for me and they fold up pretty compact. Compared to a resistance trainer, rollers require much more focus and feel more like real riding.
They appear like they should hold up well enough - they do not feel flimsy under my 230 lbs.
The reviews are pretty good:
http://www.performancebike.com/bikes/Product_10052_10551_1028745_-1___