I have an 02 silver gt and I religously use my nxt paste wax. I recently had a black 03 and used the liquid nxt gen which made that car look incredibly awesome. I wax my vehicle about once a month and I don't have a problem with doing that. I am very impressed with the nxt gen but if you guys think there is something out there that will give me the fresh flashy paint shine more than the nxt gen then let me know if ya would.
I've had nice results with turtle wax ultra gloss. I'm partial to zanio though, although its not a wax, its a polish.
First let me clear something up 1st "throwing hand glaze on it" will give you more depth and shine BUT using a gaze under a paint sealant (NXT is a paint sealant [so is Ziano btw]) it will have bonding issues so it will not play well together......You want a good OTC wax look for Meg's #26 high tech yellow wax, if you want better order some ClearKote's Carnuba Moose Wax http://www.specialtymotoring.com/clearkote.htm If you want apply some Clearkotes Vanilla Moose hang glaze then some Clearkote Carnuba Moose Wax it WILL give you a stunning black pool of paint.......
The layering works really well. I use Meguiars #7 Glaze and then #26 wax. Great deep wet look shine that lasts fairly well even here in Florida. About 3 mos. and then I need to do it again. I have also heard of doing the NXT wax and then a layer of a good carnuba on top of that, but I haven't tried it.