If you want the quality of a Prom barrel for half the cost, ZCI barrels are also a great brand. They're steel like Prom barrels, have the notch at the end for an extra o-ring, have great consistency, and are very accepting of r-hop and flat-hop setups. Something to try on your current build, remember to clean and polish brass barrels more often than you would any other barrel. They trap and cling on to dirt and grime much easier than other material barrels. Bonus points if you use a micro-fiber cloth and clean it with the silicone spray then wipe it away with the dry end until it's completely dry!