I own several crock pots and several small plug in roasters. Yesterday I put in a frozen pork loin at 2 p.m. and the meat was so tender and juicy by 5:30.. Used the roaster and cooked it on 350 degress the whole time. Needed to add water a bunch.
I won't leave my oven on when I am gone, but feel comfortable leaving the roaster plugged in the whole time. It can do low temps also and even higher, all cuts of meats and soups. My roasters have saved my ?? on more than one occasion.