Completed my first brewday with the BC on Sunday. The brewday itself went pretty well, had no hiccups. I took bobby's advice and set it in mash mode to ramp up to boil, then switched over to boil mode. I was using the steam slayer so i set the power at between 30 and 40% (i was switching it around and playing with it). I'm in Boston, so boiling technically should be 212, but when set to boil it mostly held between 210 and 211, but the liquid was definitely boiling.
From a review standpoint, I have a few minor gripes. I call them minor, because they are really not that big of a deal, but if fixed i think they could be a nice improvement. The changing of the power was definitely clunky and not well thought out, some sort of slider would have been much better. I also didn't bother with using any of the internal timers, i figured out how to set them and whatnot, but I found it to be much easier to just set a multi-timer on my phone, that way I could carry it around if i was by the sink or whatnot. Another little annoyance I found was that the device itself isn't very heavy, and the center of gravity is back loaded. This seems like a small gripe, but since the device doesn't have integrated plugs, and relies on pigtails coming off the back, if you don't have those being held up by a table (i.e. if you let them hang off the back of the table), it tilts the controller back and makes it not very secure. Long term i might try and mount it to the wall (though i'm not sure how interested i am in opening it up and manually rewiring the device), or finding a better way to secure it to a table.
Overall, I was relatively happy with the product, especially with the price point, however, I would say it is mostly a bare-bones product. I think a bit more user and competitor research, could have helped them identify a few more power-user and convenience features that could have put this over the top. I'm not sure if this will be my forever controller, especially as the space seems to be growing so rapidly, but for the next year or so, this should meet my needs. If you have any other questions feel free to ask, and i'll do my best to answer them.