I thought about getting one of the XLs too.
If you believe the specs, its larger volume and lower weight than the Yak bag.
http://www.biketrailershop.com/catal...289-p-104.html
here's another idea
http://www.ortliebusa.com/CartGenie/prod-23.htm
Last edited by seeker333; 03-14-09 at 07:07 PM.