2 Answers

There are many that I would say are excellent.  Some of the things to consider in your rating of "best" may include ease of application.  To that, I would say that some of the spray types with Carnuba wax are an excellent choice.  Also, there are some synthetics which go on easily, and last fairly well.  The type also may depend upon the climate in which you live, as some resist fading better than others.  If you have a buffer, then your choices can include some that are near impossible to apply by hand, but would be a great product for use with an electric buffer.  So these variables come into the evaluation, as does cost for some, but usually, you get what you pay for...

the one they are all raving about at the moment is one called"show room shine",i havent used it but it is supposed to be very good.