Initially we chose 464 because it touted the ability to accept more fragrance and it was cheaper than most other soy waxes. We didn't like the really curdled tops in our finished product. Sometimes heat gun would help but not enough. AND there was the expansion issue which drowned in the tea lights and would destroy our little plastic tart cups. We also tried C3 which for us produced a nice finish but burning was cratered and pitted, even seemed to be a little "foamy" - not what we were looking for. It is quite acceptable for our tea lights and we use it now in tea lights. We found our best results came from Ecosoya Advanced. Nice appearance, predictable performance and very good throw. It does still relate to technique and, as has been mentioned before, your experience may not be the same as mine; offered only in the spirit of assistance to a fellow chandler. :smiley2: