Pros:
Cool faster
Maintain cooling better
Level not so critical
Bigger 12cu ft vs 20. (Norcold 1200 vs Samsung 197)
Not prone to catching on fire
Cons:
About 6" taller than the Norcold
Need inverter and battery bank
Solar is helpful but not necessary
Must use bungees or similar to secure doors while driving
Must microwave ice cream for 20 secs to soften in order to dish it out.
If the coach you're looking at already has a residential see if it is a factory install or aftermarket. If it's a factory install everything you'll need will already be on board. If not, then you'll have to do some more research...I would not own another coach without a residential fridge....Dennis