i have a breville one, its about 18 months old.

got it at the good guys for about $70 on sale, its a big one, 5-6 lt i think, i can fit a leg of lamb in it to roast....

mine has a auto setting, a low and high setting....

i put everything in it on auto for 8 hours and ive never had a issue, always comes out perfect!!!

i also never brown meat or anything like that, i chuck everything in turn it on and let it go!