We have a Jayco 23BHM, it has a murphy bed up front and two smaller bunks in the rear that we use for storage. It is 23' on the inside with a slide-out dinette. We like the slide for the additional room that you get. The trailer feels much more open. I have added privacy curtains in the back so we can come out of the shower and change clothes without the world looking at us!
I don't think I really need anything bigger! It tows like a well with my 1/2 ton Chevy!
My best advise:
1. Shop around, walk & sit in lots of trailer, keep a list of what you like and don't like.
2. Don't feel bad, you might not make the right choice the first time! You can never know how it works until you use it!
Happy Camping & Save travels!