Does anyone have any recommendations for an immersion circulator? I am looking to purchase one as a wedding present for someone and I know absolutely nothing about immersion circulators, sous vide, or cooking for that matter. I was looking at the polyscience models, there are three of them. Any ideas on which one would be best? The person that this would be for is not a professional chef is very into cooking. He also likes gadgets and changing settings on things, making adjustments, etc... Thanks so much!