Personally, I think a motorhome is the easiest to set up.
Yes, it may be a little tricky backing into some sites but you will quickly overcome the the problem with a little practice.
If you stop when it's raining all you need to do is level the coach (from inside) and do your hookups in the morning or when the rain stops.
Plus, if you're rolling down the interstate and encounter a multi hour/mile traffic backup you have use of the toilet, refrigerator, etc. Without leaving the rig. That's nice, trust me.
Look at the smaller Class A units. Also B and C. Decide what type and size is best for you.