Not that it matters, but , I almost never use a 3/8" breaker bar. Of course I'm just a backyard mechanic, work mostly on my own stuff;maybe if I worked full time as a mechanic, I would use one more.
Yesterday, at an estate sale, I just picked up a really neat Armstrong 3/8" breaker bar. It isn't chrome, but it is the strongest design I've ever seen, which is why I bought it.
Ok, I did not have specific requirements.. I guess I wanted to pick out the one I liked best out of what was offered... or two. I missed out on a older cornwell that was offered for sale that I really liked, but I'm not set on that one. I dont like the newer c-man, matco or cornwell bars. So any older quality USA breaker bar is what I'm looking for.