I have hitched with a CURT and unhitched, they can be a PITA if not on level ground. They are known to assist with chucking as the heads pivot point is several inches below the kingpin connection. Also if it matters all of CURT's 5er hitches are Made In China.
B&W can be hitched and unhitched with RV and Truck on different planes no issue. They are simple and solid with no question if your hitched connections. B&W's head pivot point is right at the kingpin's height. All of B&W's products are Made In USA.
With B&W be sure to use a 1/8" this slip plate, Hensley makes a quality one.