Residence refrigerator

Will be upgrading our fifth wheel in about a year for going full time. Quick question, what is the upside to residential fridges? I've been using a small 2-way for 8 years now with no problems. We went to an rv show last month and there were a lot of larger 2-way frigdes in the models we were looking at. Plenty of space for the Wife and I. So why a residential, I'd like to know before I buy next year. Thanks.