I am thinking about getting a Thule XSporter rack for my new Tundra Crew Max. Does anyone out there have one of these on your truck and if so what are you experiences and suggestions? I am not sure if the 441 (25" height) or 442 (28" height) would be a better fit. It looks like both may clear the roof but the 441 may not clear by much. I was also thinking I may end up with a rack on the roof so having an Xsporter that closely matched the height of the roof mounted crossbar(s) would be a plus. It looks like Thule now has an adapter that lets you mount the rack in the bed rail tracks. I think that this would be beneficial because you could slide them forward when not in use. Are there any other racks that use the bed rail tracks for mounting? I had a Kargo Master on my 99 Tacoma that I really liked but was hoping to get something a little smaller and aluminum for the Tundra. Thanks in advance.