i've had both. pros and cons both ways.
current TT is propane
main thing is how you camp. always use shorepower? boondock or dry camp most often?
residential
pros
1> SPACE. loved the residential we had. much more cubic space. the newer residential fridges are generally energy efficient. i had a 1200 watt inverter and 2 wally world 12v deep cycles. always plenty of power to run off those for a minimum of 24 hours without recharging or going below 50 percent battery charge. we do not boondock or dry camp. i would have fridge cold and running in our driveway and load up food night before we left.
cons
need alot of battery power and way to recharge if dry camping.
current TT is propane
I do like it for the convenience of running off propane if needed off shorepower and traveling down the road. just the wife and i so we can make the smaller cubic space work for us when loading up food for the trip. just takes a bit more planning. i will say the propane fridge seems to be easier to keep at constant temps in fridge and freezer with out much adjusting. 35degree in fridge and zero degree in freezer. the residential fridge seemed to be more sensitive to outside temps. in colder times of the year had to keep adjusting temps down to keep from freezing food in fridge part, in hot weather had to adjust for that also.
