This may not apply to all of you, but one of the reasons I don't like slow cookers has to do with altitude sensitivity. This applies to old style rice cookers too.
The boiling point of water varies dramatically with elevation. At sea level water boils at about 212f, but at even 4500' it boils at just under 204f. However, the thermostats used in slow cookers (and rice cookers) run at fixed temperatures. Result: The same slow cooker will work great at sea level +/- 500', but will disappoint at 2500' and be more than frustrating at >5000'.
Just something to keep in mind. Electric pressure cookers (and, to repeat myself: THEY ARE WHAT YOU WANT

) are less subject to that problem because they typically regulate to a constant internal pressure instead of temperature. Temperature and pressure are related so cooking times will vary but you won't have the boil over/run dry problem.