I have been reading meguiars forums and talked to their support line also. They say the nxt 2.0 is the best wax they offer. #26 is the best carbnuba they offer for people who still love using nuba. Topping off 26 on nxt will not yield any better results. 2 coats of next2.0 10 to 12 hours apart should yield better results.
So last night I washed my car then did scratch x here and there, then polished the car with deep crystal #2 and topped off with nxt2.0 This morning I gave it another coat of nxt 2.0. The best wax in my opinion. For a good 8 years I have only used gold class on my car or nuba 26. For the last 4 years nothing but nxt and now nxt 2.0.
I did try this $50 wax once, but nothing to special.