Length of Ownership: One WeekPerformance: GREAT!I've never had any issue with this device whatsoever.I've owned 1 other FM Transmitter in the past, made by iRiver.This one frankly works better. I've never heard a drop of RF interference yet. I never had any huge issue with my iRiver unit either. I just smashed it on accident (LOL)Quality of Material: Feels Cheap & Looks CheapQuality of Workmanship: AverageOverall: I'd buy it again.What consumers of FM Transmitters MUST MUST MUST remember, is that you can't judge one of these things for having a little interference. Sure, there are variances in quality as with any other product... BUT, these things LITERALLY are trying to OVERPOWER the massive wattage of the high power radio equipment at the radio stations. They won't always be successful. ANY device that operates through the open air will have SOME interference... no matter the quality. PLUS, it is ILLEGAL to output too much power on a licensed frequency! Nobody wants the FCC to jail them, so give these little devices a break!