I use a Valentine 1 just right of the mirror in my LS 460.
Be aware of the radarbusters' web site as they cannot sell Valentine 1 detectors and therefore would have no reason to promote them. The Valentine 1 is the best detector available. Period. Buy one and you will never regret it. I have owned mine for several years and am impressed with the company's quick turnaround time for service and upgrades.
Valentine 1 is quickly becoming outdated. I would use the Bel STi or the Passport 9500i. I know the Bel is completely stealth (1st on the market) and the Passport uses the GPS technology to cancel out the annoying "false" readings, like grocery store doors, etc. and you can use the gps to mark "invisible" photo radar. Once marked, the passport will send the alert 1 or 2 miles before reaching the photo radar location. Valentine better hurry up if they want to continue to compete.