The one we use all the time on our RV is the Instant Pot - http://www.amazon.com/Instant-Pot-IP-DUO60-Programmable-Generation/dp/B00FLYWNYQ
It does like six or seven things in one pot from slow cooking, rice cooker, pressure cooker and others. It has become our "go-to" pot for one-pot meals. Does a good job and with the removable insert, easy to clean. Usually we set it up before we leave in the morning and dinner is waiting for us when we return in the evening. And when we dont, having the pressure cooker can turn out a great meal in under an hour usually.