:welcome :wavey
For "shine" factor? P21s, Souveran, Signature, Natty regular, Natty Blue, #16, Blitz, Mother's California Gold paste, 3M Perfect-It paste, Finish Kare Pink Wax, Carnauba Moose Wax, NXT, etc..., etc..., etc...
Every wax makes your car shine. Are you interested in sealants? There a bunch of those to choose from too.
What about durability? Do you want something to last a long time or do you not have a problem with waxing once a month. Some may either enhance or mute flake in the paint. Some may make the paint appear clearer and brighter, while others make the paint appear darker and wetter.
You can use whatever you want. Don't be fooled into thinking that one single wax will be the ultimate for dark colors (ok, maybe Souveran). The single most important thing is proper preparation of the paint's surface. Any wax mentioned here or in this thread will be nothing without the proper prep. You can even roll with the Turtle Wax Platinum Series on a perfectly prepped surface if you want. The reviews here are very positive.
The idea is to buy some, play around a make a decision for yourself. I disagree with some of whats been mentioned here as recommendations for the "best" as your title says. Experimenting and deciding on your own is the enjoyment of detailing.
Also do a search. This question has been discussed a million times. Here's a search with the words "best wax" in the title
http://autopia.org/forum/search.php?searchid=299645
There is zero right answer to this question. Taste is in the eye of the beholder.