I did this review yesterday for the EtsyMetal blog - and wanted to post it here as well:
I can honestly say this is one of those tools that changed my life. It wasn't one of those 'necessities' to get started in doing my own casting, but it has made the entire process so much more efficient that it sure seems like a necessity now! There are 4 different settings for programs. I usually just need two. One program is for regular castings and another is for flasks that include stones - a 14 hour burnout that would painful if I had to adjust the dial on my own to achieve the correct temperatures. It also made it possible to have the burnout occur overnight. Since I only have a small window and fan - it means I'm not breathing any of those nasty toxins.
I haven't started experimenting with enamels yet, but I'm confident that this would help with enameling as well. The cost is quite a lot to shell out at once, but I know it has paid for itself many times over. There are several different kinds of controllers - you can check out more info on this one here.