I have just bought a slow cooker so that I have a meal ready for when we get home - and I am keen to try some recipes - but most seem to be for 6-8 hours even on low. I leave the house at 8 and return back at 7 - so need to hook it up to a timer. Does anyone have experience with leaving food at room temp for 5 hours and then having timer kick in - or do most people have the cooked food sit for 5 6 hours?