48/3000 Ninja HPA tank
Invert Whisper Barrel
I'm fairly new to the sport, but I bought the Invert Whisper as an upgrade to my stock barrel. I'm very pleased with it so far, I've taken it out on a few outings, and I have noticed a considerable improvement in accuracy. As far as the noise goes, I haven't noticed a change in sound however. I'm not a scenario player, so this doesn't really concern me, but if you're looking for a barrel to make your marker a little less loud, I'd look elsewhere. Other than that, I think I got my money's worth out of it.
Get it if you're looking for a budget upgrade for accuracy, but not if you're just looking for a quiet barrel.