I've got, I think, the entire range, but I've yet to use the full multi-stage wax job - the NXT wax does a damn fine job, and is really quick/easy to use. If I was buying now I would probably get:
Quick Clay Detailer
NXT Wash
NXT Wax
Wash Mit
Microfibre Polishing Cloth
An Illegal Immigrant to do the hard work.