As usual, what Stan has said is correct. But let me add some.
My refrigerator is a Norcold 12v only, because the camper has an inverter/charger to go from 120V back to 12V DC. Here is the good and bad. A compressor frige works ALOT better at cooling than a 3-way. Night and day difference. BUT, it has a compressor that you can hear and feel the vibration. I did alot of work to isolate the compressor on the back of the unit and added sound insulation to the interior of the cabinet. As is, I still turn the frige way down about an hour before bedtime and then turn it off for the night. This sound maybe inherent to the Norcold though because I can't hear or feel my ARB frige.
As for electrical, I have a 130 watt solar panel, Blue Sky controller and dual deep cycles. This is way over kill. I carry two refrigerators, run four lights, a roof fan, an evap cooler and watch a DVD in my laptop before i crash for the night. Lowest voltage noted at dawn is 11.33 volts.
And yes, the guy on Ebay is about the only place to get SMEV right now.
Hope this helps.
Jeff:coffeedrink: