I am driving from Tucson Arizona to Santa Barbara California in an hour. I have two choices: The RX65 and the 9500i are the only detectors I have. My friend is in another car borrowing the Passport 8500 X50 and I don't have a V1 on me! I've heard the RX65 rules on KA but I don't have much long driving experience with either and my 9500i has bad ramp up. I could switch between the two!? Need help ASAP!