I am a big fan of the Craftsman Bar Clamps, which are make in Slovakia. Here is one of them:
http://www.sears.com/craftsman-36-i...aaA2Z-QkuhojwG9OsadCIaAu3O8P8HAQ&gclsrc=aw.ds
I believe that they are made by Wolfcraft and also sold under another brand or two. Monte posted up a video from the factory once:
https://www.youtube.com/watch?list=PL75E497ED42A9CDAD&v=OqdT4KjlNPw
You need to pay attention to the throat depth on these though. The 3.5 inch and 2.5 inch are indistinguishable in some of the pictures but are offered in the same lengths. I vastly prefer the big ones.
Compared to Bessey and Jorgensen, these are probably a step down. But for the price, I don't think that they can be beat. Miles ahead of the HF and Irwin clamps.
You used to be able to catch these at around 50% off here and there on the local ad. But I haven't seen them really discounted in quite awhile. Surprise points seem to be the best purchase method at this point.