It really depends what you are looking for.

Want excellent accuracy out to 300+ meters? Get a stainless-steel barrel, something like Noveske, WOA, and others (many choices). WOA is one of the best values in Stainless barrels I've been told.

Want something with long life? Any of the Chrome-lined barrels will have a long life at the expense of accuracy. BCM, DD, LMT, there are a lot of good choices for the money.