As fas as coatings are concerned, they will provide greater protection and durability over waxes. That said - the coating leaves behind a much different reflective look than a wax. Both of my cars are black. My DD, 2008 Infiniti QX56 has WG Uber Coating and the other, garage queen, does not, except for the wheels (the brake dust is a killer).
For me, I'm glad I coated my Infiniti. It is a beast, a work horse...it is in emaculate condition. It also has a ton of surface area. That said - for me, the more I look at the reflection of a coated car, the more I prefer the look of a good wax, moreso on black vehicles. IMO - with a black car you lose that deep warm glow. Several months ago I tried BF hybrid montan and was wowed by both the shine and deep look. Another forum member had also peaked my interest in black light and collinite 845. This also stunned me.
I'm also not sure if I will re coat my Infiniti. I also enjoy using waxes and on occasion trying out different products. Once you coat....you're basically done.
If you haven't already done so, take a look at various pics of cars that have been coated and those that have been waxed to compare the look. If you are happy with the look - go for it. If not, since you enjoy waxing - keep to the wax.