I do like the JP-2 and JP-3, but their downside is, they are heavy in comparison to a 086.
The JP-2 and 086/9886 pipes are very similar performance wise. I am currently running a Dynamite Platinum series hard anno 086 pipe. Structurally it is stronger than the JP series, but weighs a lot less.
Both the JP pipes I had would flatten out on the bottom from chassis slapping on jumps.
3 gallons on the Dynamite and it still looks new, no dents at all. They were mounted on the same truck under the same conditions with same pipe hanger wire. I have the dynamite pipe sitting about 2-3 mm from the chassis at the lowest point as well.
I only paid around 35 bucks for it off E-Bay, it really lets an engine rev out hard. Loads of power from a .21 from bottom to top.