I've always been a fan of KY133 myself (but I've only been doing this about a year too), mostly because of the same reason you are. I love the granules! But about three weeks ago, just to see if it was working like I wanted it to, I poured 4 different waxes with the same FO and had three people test to see which one was the strongest, longest lasting etc. Two people have reported back that KY133 fizzled out the fastest and wasn't as strong as the rest. I still have a verdict out for one of the testers. Of the two that have given their response, 4625 was the strongest and lasted the longest. If I use clamshells, I mix 4625 or 4794 with 4630 or 6006, (can't decide which one to stick with) but if I'm using a silicone mold, I like to use straight 4625 or mix 4625 with 4794 because I can't stand the way the wax rubs off on the cello bags or the windows of the bakery bags. I really wish there was some way to keep that from happening when mixing a container wax with 4625. Good luck with your wax testing! I'm not sure if it will ever end for me (sigh!). I've always had a hard time making my mind up about everything! LOL!