I've only used 3 kinds and they were all good. Zap sport and rec ball and Monster Balls
Accurate, good looking, Rare, and quiter than Stock
I bought this barrel off ebay so my review may not be the same as someone that bought it from a store.
I love this barrel. I will not talk about what is good about it because there are already 70 other people that love it and so do I. But for some reason my barrel did not have an oring where it connects to the marker. which is fine except after about 500 rounds or so it tightens up so tight that I have to take a wrench and pry it off. I wrap a towel around the barrel so it doesn't damage it. But im afraid of hurting my marker or barel becaus of this. The missing oring might be because I bought it off ebay...who knows.
I love this barrel. This was the First thing I bought for my marker and it has been the best. It does shoot threw a chop after 4 or 5 shots. Super light weight. I thought I would break it, but its tough. Its quite and accurate. I love it.