I used PCS, Premiums, I never had problems with either.
Expensive as all get out
Doesn't actually silence the gun
Hard to clean
This barrel is very nice. I picked it up on the cheap, because my uncle owns a shop, but the regular price is $120, which is more than this is worth. when I got this, the first thing I did was put it through it's paces. I brought out the paint and blasted away. It was very accurate, easily hitting targets at 50 yards. I preceded to put it through it's paces. First semi-auto, then response trigger full auto, and I never had a ball break. I had anticipated that, so I'd prepared. I brought out some 4 month old Wild Streak that I'd picked up at Wal-Mart for these jobs. It actually took six shots before one broke (dang cyclone feed). This was where things got iffy. I was worried that cleaning it would be a chore, and I was right. While the insert comes right out, it is hard to get the little "silencer" piece clean.
That leads into my next part: the silencer. It does not actually change the sound of the gun. Maybe it makes it more accurate (I couldn't tell a difference) but the sound does not change.
Noise Level: 6 (if it wasn't supposed to be quieter, it would be 9)
Cost: 3 (Way to much for too little benefit)
Ease of Use: 7 (that inner chamber is tough to clean)
Average: 6.5 rounds to 7
I really wouldn't reccomend buying this. Get a cheaper barrel that works just as well, like the J&J. You should only spend that kind of money for an actual benefit, like a Flatline.