Ok here we go about NX again. They only reason they make more power is because they use bigger jets, and call it the same shot size. I personally don't like the NX single fogger kits, because the fuel sprays through the air intake and TB. It can pool in the intake manifold, and ignite, causing an intake backfire...cars have caught on fire from this. The best kit out there is Direct port, whether it's NOS or NX. For the beginner, not wanting to go over a 75 shot, Zex is right for you.

As for the bottle openers, I haven't heard of many people having problems with them.