i like my kriega system. I also purchased the tank converter kit and the 20 liter bag. The bag kept my clothes dry in a rainstorm, is big enough for a 15" laptop and is easily detached. The only problem is cruising around with the tank bag converter on the bike without a bag. having said that - i think they sell something to clean up the loose straps - just have not looked into it yet...
http://www.kriega.us/products/kriega-us-20
