I just keep using the same type... found an Italian one on craigslist last year for $20. Add the metro north ticket to get to the upper west side, it cost me $48, and it's the best one of this type I have ever owned.
Just solidly built, the clamps stay put it, as does the handle.
OTOH, i have one here in Utah that I bought at bed bath and beyond that SUCKS. it's chinese-made, falls apart, and I'm prettys sure that it's 50% plastic.
I guess what I'm saying is, quality matters, even in the simple table-top roller models.
if you have a Kitchenaid mixer (what? you don't? what kind of cook are you?????

) you can buy pasta attachments that work quite well. The nice thing with these is that you'll now have two free hands to feed/collect the sheets and pasta, making for a much neater process.