Ok i know this has been a big topic lately and soon enough I want to do pulleys. I also want to keep my car for atleast 4 or 5 years. I know the UR pulley set has some long term problems, but what about the AEM pulleys? has anyone had any problems longterm? I know they dont get as much performance gain as the UR but I want something that I can put in and not have to worry about ya know. I need advise please