I have been using a Sansaire for 3 years and I like it, but feel there might be better options for durability. It feels flimsy and I did break it when it was about 1 week outside of the original 1 year warranty, but they did right by me and I sent it in for a replacement.  I tripped over the power cord and bashed it on the ground, the plastic twist top dial was damaged and after taking it apart I can say it is not sturdily built.
I use a kitchen pot when just making a few steaks for me and the wife. I also have a $15 48qt Iglo "Island breeze" cooler from walmart that  cut a hole in the lid on for large cuts and long cooks. I have done 2x full pork loins, full venison hams, full salmon fillets, briskets and other big ass cuts in it. Its pretty awesome and the cooler helps hold heat. Never had any issues with the power of not holding temps with the Sansaire, but there may be better options. I don't see it mentioned very often.
If I was buying one today, I would go with a Joule because they support Rinella and are Pro-Hunting.