just the stock barrels on the spyder one and the spyder shutter, and you know how stock barrels are...
I use a Spyder Shutter with an Elcd Boo-Ya electronic grip with a Custom Products 16 in. barrel and a Ricochet 2K electronic hopper. As side-arms I use a Sheridan PGP and a PT Xtreme
I haven't had any one kind of paint that was great, but I recommend not getting winchester paint, all they did was break, either in the barrel, or in mid-flight.
it is a very accurate barrel, I haven't used other barrels enough to say if it is better or worse than them, but I found it to be much better than the stock for my spyder (obviously). paintballs tend to zip off to one side or another occasionally, but I don't think that it is the barrel's fault, I think it's probably my paint, I buy a lot at one time, and it lasts a long time, so they could deform a little, but the fact that they still go pretty damn well is a good sign.
just that paints still zip off course, but I don't know if it's the barrel's fault or not, and they are shinny, at least mine is, cause I bought it off someone, so they stick out when you are playing rec ball in the forrest and you want to be sneaky, they glare, and then people see you. but that's not entirely the barrel's fault, I think they come in black, which would be better.
I think it's a great barrel, but I don't have anything to compare it to, so make sure to read some other people's reviews, but for the price I find it to be a great buy, no barrel could be 2 or 3 times as good, and that's how much more you would be paying for them.