If your paint is new or very well cared for you won't see a night and day difference. Most of the shine you see is from properly prepped paint. If you look at the pics I posted above of my 'Stang with NXT and with #26 it is really hard to see a major difference. The differences are very subtle. NXT is more reflective than #26 and #26 gives a darker warmer tone to the paint.
NXT does offer some things that might be worth looking at aside from just looks. It is a pure polymer so you should see quite a bit more durability than the cleaner wax. It goes on and comes off easier than most cleaner waxes. NXT also has the ability to fill minor swirls and scratches lessening their appearance.
Although I typically stick with Meguiars these days I still like Zymol and when I first bought my Mustang I used Zymol on it for the first few months.
Zymol Cleaner Wax