Opinion on Meguair's NXT??
 

What do you guys think? It is the only thing I have found locally. Anything else I would have to buy online. No P21S, of Zymol @ the local Advance Auto part store. Will this be sufficient for a new car? I just want a wax that will stay on even after I wash.

NXT will give you a bright shine right off the bat. This is due to the high silicone concetration. As far as durability, depending on the soap you use, expect 3-5 washes before the lustre goes away. If you're serious, I'd consider investing in "real" car care products such as P21S, Zymol, Menzerna, etc. Better quality products and you'll get lasting results. PM me for more info on zymol.