Glenn, you summed up my thoughts exactly, with the exception that I did not want to open the garage door to get to the other side of the truck at night. Even witht he short bed, I have to pull the truck to where the front is almost touching the wall and it is still a tight squeeze with the door down. Aesthetically, and this is most definitely not a practical reason, I find the short bed more pleasing.
Like you say, with the SuperGlide, I do not worry about the Montana's nose kissing the truck cab.
I suppose, though, like 4x4 on trucks, this is a matter of personal taste.