i have a Breville banquet slow cooker which has 6.5 ltr capacity. I like to cook enough for 8 - 10 people (we're a family of 5) so we have enough leftovers for another meal (given that it takes all day to cook!). it handles a 2kg leg of lamb with ease with all the veggies. no timer, but the usual low, high , keep warm. I'm very happy with it. I chose it because of the size & shape (it's a rectangle which fits in my cupboard better & fits roasts easier than round ones).