I had the Premium 5.25" components in my Durango in Q-Logic kick-panels. They were hooked up to a 80w (RMS) 4-channel amp. They sounded F'ing amazing. I have not had any experience with their subwoofers or amps, but their component setups do the job, quite well. Quality German engineering at its best. After I'm finished with HP-related stuff, I definitely want to pick up a new set of MB Quarts.