$400 is relatively expensive. You can get a 1100 watt Polyscience circulator for that much. No circulator or water bath I know of requires vacuum sealers; all of them work fine with zips. Also, not to nitpick, but duck confit only takes 8 hours or so; it's one of the easiest things to do with a water bath. It looks neat, though. It'll be interesting to see if the cooling feature is useful, or more of a gimmick. That…
It specifically says in the FAQ that it can't do cook-chill. I was debating trying to work on one that could awhile back but man is it hard to get that kinda cooling power economically, at least given my cursory exploration. Also, I've never done duck confit sous vide. Maybe I'll try that next. I made some the good old fashioned way a couple months ago and wow.
I'm not sure I understand the utility of being able to throw all the ingredients for my dishes into a water bath days ahead of time, since I need to bag the ingredients anyways; why not just keep them in the fridge and dunk them the morning of the cook? Also: it's a little misleading? to suggest that you'll be able to cook lots of different ingredients in a single bath, since the veg will need much higher cooking temps than the proteins.
edit to tone down slightly