I have a lot of Cman, along with Snappy, Proto, Cornwell, and other truck brand tools. The Craftsman set I got with my first paycheck after getting out of college is still working fine.
I've augmented the rollaround with a bunch of older high quality tools bought off of garagejournal.com and ebay. The 50's 60's craftsman stuff is really nice.
One can never have too many quality tools :-)