It is said that after a vehicle has received its last step product (LSP) that is, in this case in point: A Wax...
It will then depend upon how a vehicle will be "touched" as it is will be exposed to/by environmental,
as well as man-made, contaminates; its wash/dry cycles and the type of wash mediums; indoor/outdoor storage;
daily-driver vs. "garage queen"; etc...that will ultimately determine the longevity of the wax that was so applied.
IMHO...
Asking a wax to provide what you are desiring from it:
Im looking for a wax that will give off an obnoxious show car shine,
last for about three to six months in both shine and protection.
Is quite unheard of...even under the best case scenarios.
-LSP waxes are generally formulated to provide a only a certain % of several different attributes...
Some of which are: protection, shine/gloss, durability, etc.
The more % of one attribute that a wax has, the less of a % of the other attributes will be contained therein.
-Some waxes are referred to as "Beauty Waxes".
Depending upon ones definition of: beauty...the above phrase could,
quite possibly, refer to what your concern was in your OP:
shine breaks down quickly, while it maintains great protection
BTW:
I'm interested on how you know that: Even after the Zymol Wax had broken down quickly...
the Zymol Wax was still protecting (and for how long). Thanks.
shine breaks down quickly, while it maintains great protection
Bob
NOTE:
It has become the accepted practice to apply a sealant first, then a wax, if so desired.