You guys are making me want more S-o tools. I only work on my own trucks. I have the basic Craftsman tools, but I did buy a three piece S-o 3/8 ratchet set, which I use all the time, forget about the generic Sears ratchets. Also have two S-o ratcheting screwdrivers, plus master bit set. When I reach in for a screwdriver I always grab an old S-o flat tip I found years ago in a rail yard, this thing has to be 10+years old, beat up and all but it does the job. I wouldn't even think about using Sears tools for wrenching fulltime. Maybe I should look into going to school for diesel mechanics, wouldn't have to keep driving this big truck out on the road...