Just when i thought the St!ffi was the best darn barrel there was, i needed versatility as a back player. so i traded in my St!ffi for a DeadlyWind Wisper and 3 inserts (.689,.691,.684). now how can i describe the Wisper? its basically a St!ffi, but BETTER! how much better? well it acts like a barrel kit first of all (with the use of Freak inserts), obviously. the inner SilkFiber layer self-cleans the barrel far better than a St!ffi. 2-5 shots and it'll start shooting straight again. its very light than any other barrel, though not quite as light as the St!ffi. the Freak inserts does add some noticeable weight, but BARELY. the ports are average sized and it does reduce noise, though there are other barrels that are quieter.
If you liked the St!ffi, i HIGHLY recommend this barrel to anyone. its light, versatile, and accurate. only one problem is that Freak inserts will be needed and bought separately.