I just started using my RX65. From all of the old posts I have read, it seems that the Highway mode is better than than the Autoscan mode. Am I correct? Also, the DFT settings from the factory have X - On, K - On, Ka - Intl, Pop - Off, Ku - Off, LSR - On, and SWS -Off. Why are Pop, Ku, and SWS turned off? Shouldn't I turn these on? It also seems from the old posts that the experts are split on whether to use international or USA mode for Ka. Is that still true?