First off need more information:
1. What size TV do you have? or do you plan to buy that also? TV dictates the RV you get.
2. Family size, what type of use, etc?
3. Base your buying decision on what the GVWR your TV can handle, loaded with all your stuff and people you will carry. DON'T go buy dry weight. It means nothing.
4. If buying used (a good idea on your first purchase) have someone with experience look at it or have it inspected. I won't let friends buy used unless I look at it or they have someone do that. Lessoned learned for me.
5. Are you storing it on site or do you need to find storage?
6. Do you have any DIY skills? A must in owning an RV.
Good luck on your search and be sure to ask questions.