Belt dressings are a mixed blessing, they can rot
the belt, which stops noise
but hurts in the long run. Properly installed, no belt ever needs them.
Gates, Goodyear...plenty of good brand names but when you have V-belts now, you have obsolete and arcane parts
that the auto shops often don't carry any more, so you are best off trying to order
from a reputable merchant.
And I say reputable, because counterfeit auto parts
are a HUGE global industry and there's no way you can tell a counterfeit Gates, etc. from a real one, that costs some distributor 1/10th of the price
. (Which explains why a lot of "good" belts don't last.)
As to being abrasion resistant to rust? No, really, that's backwards. Belts are designed to work on smooth clean pulleys and it is your job to clean them up, have them painted or anodized or parkerized, whatever it takes to restore the correct finish so a belt can work with it. Find a machine shop, bring in the pulley, ask for options.
It is also very easy, when auto shops don't want to waste space stocking obsolete parts and the kids
getting minimum wage don't want to waste time on them, to be sold a V-belt that is not the right profile. You can find lists with diagrams that show how many profiles there are for v-belts. The angle of the V can actually be different. The height and width can be different. Off by a little bit, and you'll never see it but the engine
will eat belts.
Any kind of kludge or compromise will eat belts. But take the time to make sure everything (pulleys, mounts, belts, alignment) is set up right, and all of a sudden the problems go away. Much simpler in the long run.