Harvester

I drive to pick up my wax. My supplier currently carries the 415 ( I don't use this any more) and the 464 which is what I use now. They are planing to add the 444. For those who have use these waxes what is the pros / cons between them. I know the 464 looks nicer and pours hot compared to the 415. The FO load is a little less, but I do get a good hot throw. What is the main difference benefit to the 444.