If you are considering a rifle barrel then look here:
http://www.encoreclassifieds.com/
There are a bunch of barrels on there.
Mike Bellm likes the Bergera barrels. But he also sells them. Some for decent price. I am not knocking them, but just be aware that he has "skin in the game".
Personally Bellm did a trigger for me and his work is impeccable. And I trust in his word, but just be careful.
If you take your time you should be able to find a good used custom barrel for about the same money. Or a little more.
Personally I will not buy a Bergera barrel because the TC warranty service is just too good. If you have any problems at all, TC will listen, and make it right. With their $50 rebate you can get a pretty good deal right now. I hae heard that Bergera has straightened up their problems with their barrels, but at one time they were very problematic.
I have also bought from EABCO. And I also consider them good people to deal with. The lady that answers the phone is very friendly. And will do what she says she will do. I really like my Encore rifles(not MZ), and find TC, EABCO, MGM, and Bellm to all be first class people to deal with. Tom.