Both kits have advantages and disadvantages depending on what you prefer.

The AA kit is more model specific, it uses a lot of the factory connectors and switches and adapts through the factory bulkhead opening. The main drawback IMO is the pre terminated fuse box. It may leave you with unused wires / circuits coiled up under the dash.

The RF kit is a bit more generic and covers a wide range of years. It does not appear to come with the factory connectors and also does not adapt to the bulkhead opening. However it does have a fuse box that allows one to terminate the circuits /wires as required. It is similar to an AA hiway 15 or hiway 22 kit. hope this helped a bit