Either Deavers for $1500 or a regular tent for <$100.
I kinda went through this calculus a year ago when deciding how to overland my Raptor. RTTs were heavy, and expensive, and they're with you all the time. So I asked myself, what is the benefit of a RTT? And I came up with: 1. It sets up fast. 2. It's allegedly more comfortable than sleeping on the ground.
When I overland I'm not usually on a tight schedule. I've usually got literally nothing to do. So speed of setup isn't a big issue for me. And sleeping on the ground isn't a big deal to me. So we just keep rolling with the normal, excellent tent we've got.
Nothing against people with RTTs. If I had the payload and the money and my Raptor wasn't my daily, I'd do it in a heartbeat. But I think it's important to remember, you can camp just fine and have incredible experiences sleeping in a normal, non-RTT. RTTs aren't a requirement for having big adventures.