[St. Lou Stu]

I don't/haven't owned one but have spent a lot of time driving them.
Background on that is that I work for an automotive service equipment manufacturer and I do all of the vehicle application testing, so I drive everything and get a chance to compare a lot of different vehicles.
Personally, I don't think the RL offers anything more than a TL SH-AWD.
The size and amenities of both are identical or very close to it.
For the cost difference you may be able to land a new TL.

Acuras in general are a solid vehicle. I don't recommend many luxury type vehicles, but I would an Acura.
If you want to bend my ear, shoot me a PM as I am not on regularly anymore.