I agree with Greg, I like Werksan best for high quality. If you can't spend quite that much, Pendlay bearing (NB) would be my next best choice. After that, DHS, good bar but a little slippery in humid weather without LOTS of chalk!!
And, I can say that I've lifted on all of them more than once, including various version of Eleiko and my very own ZKC bar (which I like, but the knurling is a bit smooth).