Overall, this is quite a neat little cooker and does the job it sets to achieve, however, it could do it better. I like the compact shape and the fact it's round rather than oval I think is better but what lets this unit down is the way it lets the steam vent.
The removable ceramic bowl has 4 very shallow and narrow indentations spaced equally around its rim to allow steam to vent but they're not very effective on their own; instead, as the food bubbles away, the steam builds up and escapes in splutters from underneath the lightweight lid which causes a constant rattling throughout the cooking - pretty irritating if you have to listen to it for 8 hours! This rattling happens on both the low and high heat settings.
However, it's easy to solve the problem by weighting one side of the lid (we used a baking potato) ...ahhh, peace and quiet again, perfect!
Other than that flaw this is a fairly good little slow cooker; and would suit a small family, or a hungry couple, as long as you don't mind staying in whilst it's on. As for us, we wouldn't feel comfortable leaving the unit on and going out for the day
(PS - another reviewer mentioned a "timer" on the unit, so just for clarity, there is NO timer; only the off-low-high-warm settings).