I bought my UTW two years ago and the only thing it has done with all it's use has become more comfortable. The nice part about a more expensive bag is that you can get changes made to suit your needs. Sam made me a longer and wider shoulder pad and added a sleeve for tools at a very minimal cost.
On another note; in my wheeling and dealing I am left with a brand new Mirage group. I cannot extend the usual TO Fixed discount (FREE) that is usually offered between members *ahem*krusty*ahem*...(you rock BTW) but I can definetly work a sweet deal. Look for it on craigers. I'll add the link when the site decides to load for me.