If you are planning on purchasing one, check out Bed Bath & Beyond because with their 20% off coupon the price is a lot better.
The only problem with the Demi is that it doesn't come with the rack to keep the food separated and if you buy it separately plus pay the shipping you probably are better off getting the Supreme!!
I have both the Poly Science and the Demi, I use the PS for larger batches of food and use the Demi for reheating smaller frozen quantities. I buy the large packages of skinless boneless chicken breasts at Costco or Sams, then wash them, prep them with spices etc and individually vacuum bag them, then sous vide them, then cool them down in a ice bath for at least 30 minutes then freeze them. When I want a chicken breast fast I just pop it in a 140* water bath and in 30 minutes it is ready. It comes out of the bag as moist and tender and tasty as you can imagine!!!
You can't believe how good 72 hour sous vide short ribs are, they are rare when you cut into them, and tender like prime rib!!!:hungry::hungry: