The barrel is very accurate and has great range. Its easy to clean and the flat black is great for blending in. Its also relatively cheap compared to the "high end" barrels.
Just like everyone else, I've found that it is as loud as it gets and if you break a ball you MUST clean squegee your barrel.
I've often thought about getting another barrel, but I simply don't break paint with my setup - even at full auto. I've shot against higher end markers with Teardrops, Two-piece barrles, and the Aradus and found the distance and accuracy of my marker with the Armson PRO is as good as more expensive setups. I've also found that even though its a loud barrel - SO WHAT! If you are communicating with your squad everyone should know where you are anyways. Its a great barrel and at 14" its versatile enough to be my only barrel.