Which one do you recommend. I want to get the one that'll give me the best performance.i'm worried the venom won't spray when i want it too, and the NX will tear up my engine.

imo go with nx. I have used my NX kit for the past year and a half and have had no problems.

It is typical for me to get the bottle filled and empty it with in 24 hours.

I LOVED my N.O.S. wet kit... it worked great, and wasn't too expensive.

1990 Eclipse GS-T

NX. Haven't seen the venom kit, but the NX kit I'm playing with is really simple and well built.