http://www.ortliebusa.com/CartGenie/prod-29.htm

I use the ortlieb back roller plus. Have been using them for about 6 months. They work great and hld up well to use. I also like how they look

Probably well out of your price range judging by your responses to other bags.

My favorite part about these bags is that they lock very securely to the bike--they don't move at all and are easy to put on/take off.