i've read plenty lately regarding waxes. generally speaking, the more you pay, the better the wax.

however, there's 2 general kinds of waxes:
1. carnauba (natural).
2. synthetic.

carnauba wax is supposed to be "super hard" whatever that means. it is not hard in any appreciable way for bikes. it lasts about 30 days they say, although there's lot of variables. but, it does have an incredible shine, and it is what you want to use if you are going for looks. it is not even close.

synthetic wax (like meguiars above) is made in a lab and is probably way more advanced than carnauba. it lasts a lot longer. months longer. but it doesn't look as nice, but it still looks great. it can be slightly hazy/milky, but i doubt you'd notice.

i used carnauba (kit brand) on my bare steel frame and it looked fantastic. it also started to rust during longer rides (on the coast). if i did it again, i would use a synthetic.