Asuuming you want finish / shine over protection (therefore regular top ups) anything by Zymol, albeit a bit over budget. There stuff is what Clean Your Car recommended to me for car shows. Arguably the easiest to apply and remove of all the products I've used.
Not a wax, but if you're looking for shine before a wax Auto Finesse Ultra Glaze gives a stunning shine / gloss with no need for effort. Pretty new to me, but I've used it on my last two details after polishing and it adds an amazing depth to a finish.
Let us know what you go for and what you think!