thanks CarGlow... I am settled on 'NXT wax for now' because I am happy with it and it has brought out the shines I haven't seen before. I really haven't used too many other products (I've tried S100, VM, and Wolfgang) and NXT seems to be the most satisfactory on my car's paint.
Carglow...I tried topping NXT with S100, and found the NXT looks better by itself (the optical clarity was much better), but beauty is in the eye of the beholder I guess...Quite a few people are happy with NXT with S100 and other topper. I am still experiementing with NXT though...So far no "gumming" issue yet...