When we purchased our 351 we hadn't even considered a residential refridgerator. However, the one we looked at had one in it so we decided to get it. Absolutely love it. We pretty much never dry camp so battery life isn't an issue for us. We also used to store half our beverages in one of the bay's if we were on a long trip and now we just go ahead and load them all in the fridge. The freezer also is a great place to store the alcohol. All of our camping friends can't get over having a refridgerator that size in an RV.
I wouldn't own another MH without one.
No cons for us but as I said we don't dry camp so we are either driving or plugged in.
2014 Georgetown 351DS
3 Boston Terriers, 1 Frenchie
Gonna miss you Toby. RIP