I started with a Class C then went to a TT (travel trailer). I wanted something bigger and new (for warranty). I was able to get a 35′ TT for half the price of a new 5er. So, TT’s are much cheaper to buy.
Then there’s the tires (cheaper), no motor (lots and lots more cheaper) and lighter (for your TV – truck).
I would also suggest new if you get anything with a motor or get a used one where you can get a warranty.
Since you are only a “weekender” I would go with a TT. I’m looking to upgrade to a 5er as I can now afford a new one now but will wait a bit.
BTW, I’m a full-timer and wouldn’t trade the lifestyle for anything.