Best X7 Phenom Barrel

I would definately recommend the straightline or hammerhead system, especially after what you have experienced with the flatline before. The only difference, besides cosmetics, between the 98 and Phenom flatline is the overall lenfth and adapters. Both are finnicky on paint and accuracy. The straightline is for all purposes the exact same as the hammerhead barrel, both have rifiling but in my experience doesnt do anything. The most important aspect of these barrels as with any other barrel system is the interchangeable backs (fins). Because of this you can match any paint to your barrel for overall better accuracy, air efficiency, and less paint breakage. If you are willing to look at other barrel systems i would also recommend the freak barrel system by smart parts or ultralite barrels by dye. The freak barrel system should be fairly cheap seeing as its a smart parts item and they have recently filed bankruptcy, the ulralite barrels on the other hand are very expensive (unless you find them used) but you also get a very good barrel. hope this helps.