Welcome...I am also pretty new to the forum. Tons of info on here.
I have been doing a lot of research on RTTs (Roof Top Tents) and actually have decided against getting one. Reasons are cost, mounting/removal difficulty, reduced gas mileage, high mounted weight. I have decided to go with an OzTent instead. I like the ability with the OzTent (or any ground based tent) to leave the camp in the vehicle and not have to break camp. But that's just me. Plenty of people have RTTs and love them. :sombrero: