It depends on how you plan to use II. The main benefits of the gold and platinum are the discounts on getaways, free guest certificates and discounted upgrade fees on exchanges. You need to look at how you plan to use it and determine if these discounts outweigh the added cost. With that said, I don't really see any value in gold membership, regular or platinum is where it is. If you will buy two guest certificates in a year, buy three getaways, do three ore more unit size upgrades or any combination of two or more of them, then upgrade to Platinum.
I did
publish a video on
my YouTube channel a while ago explaining these memberships.