The best advice we received was this: if you are a sightseer, moving to a different location every day, a motorhome is best. If you are a vacationer, going to a destination park for a weekend (or longer) - a trailer gives you more room.
Our first RV was a 28' Class C, which we used variously with or without a toad for 10 years as we visited as much of the US and Canada as we could reach! It was perfect for that. When toadless, you learn to pick up needed supplies before you get to the RV park; and we rented a car for visits to National Parks where parking is difficult at scenic turnouts, for example.
We also used the Class C to pull Ed's drag race truck to the track where it served as chuckwagon and nap place for the grandkids. Also was handy as a tailgater at grandkid sports events; or simply to haul a pile of kids to the park, where it offered a clean place to snack or use the potty.
Then we wanted to dabble with Snowbirding for several weeks at a time; and we went with a 5th wheel, which seemed mammoth in comparison....LOL! But that left us with a huge vehicle as our daily driver; and there's downsides to that if you like to explore little out-of-the-way places.
Once you figure out HOW you want to RV, the decision gets a bit easier :-)