It would be my opinion that a standard slider hitch would be the way to go. You have a 13 year old truck and an 8 year old RV so no reason to go first class. Go with entry level to start and just know that you have the slider to fall back on.
Jim and DW 48 years Brenda
2017 38rssa, also a 2015 Salem (for Alaska)
2019 F450, ruby red
Harley Road King & sidecar