I picked this off an e-mail I got from a car detailing company. It's a good summary of the advantages and disadvantages of the 2 types of car wax. For me I go with the longer lasting Polymer waxes.

Carnauba Waxes:

Advantages:

A darker, deeper, richer shine.
Best carnauba waxes produce a liquid, "wet-looking" surface.
Carnauba waxes tend to hide minor swirls.
Carnauba waxes bead water (tells user when to re-wax surface).

Disadvantages:

Limited durability (Carnauba starts to melt at 180 degrees F).
50% gone in 30 days, 75% gone in 60 days, re-wax in 90 days.
Some carnauba waxes are harder to apply. (Require more effort to buff off).
Some carnauba waxes create chalky- white residues and stain trim moldings.
Low surface adhesion - can be removed by car washes and detergents.
More prone to water spots.
Usually requires a strong petroleum solvent base.
Can cloud and/or streak on dark color cars.
Can be difficult to apply by machine.

Polymer Paint Sealants:

Advantages:

Longer lasting. (Most will last six months or longer)
Easy to apply.
Very bright shine.
Most sheet water which reduces water spots.
Stronger surface adhesion resists detergents.
Usually easy to apply by machine.
Can be water-based or use a mild mineral spirit.

Disadvantages:

Bright shine is often referred to as sterile, lacking emotion.
(it does not allow the paints true pigment to show through)
Tends to highlight or amplify minor swirls and paint imperfections.
Sheeting does not give a visual clue of when to recoat.
Some products have long cure times between coats.

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2006 VIN #30, first 1000 series, black exterior, sand/steel interior
Index of useful threads: General, Tech

It's just saying that looking good requires a lot of hard work.

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It's here! It's awesome.

Green with Envy! See it at the avatar.

Rejex is a great polymer product. It really works great on our MCS.

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GXP - cool/ebony(red)/manual

If you can afford white carnauba, nothing comes close to it for waxing your car. Look into Zumol products. Most of their products are affordable.

http://www.zymol.com/carfeed2.htm
http://www.zymol.com/crecar2.htm

Hey I broke my silence . . . . . mceb, see what you made me do

Wax will do that to you Welcome. Thanks, some of that is expensive wax

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2006 VIN #30, first 1000 series, black exterior, sand/steel interior
Index of useful threads: General, Tech

I just spit on her. Spitshine. Just a joke.

They have one in the $40 range for a jar. It works wonders . . . .