I've always been very happy with n.o.s. kits. Very reliable, very simple, and inexpensive. My civic's n.o.s. wet kit has been going now for 4 years total, zero problems. I also have a s10 with a 355 and a n.o.s. plate kit. The kit was bought used but has been on my truck for over 3 years now, zero problems. I bought a n.o.s. dry kit for my daily driver civic a couple years back, zero problems. I've installed a few Zex, NX, & TNT kits on customers cars and have always been fairly happy. We've had both NX & TNT soilenoids lock up, after a short period of time.