depending on what u want in a HU..i had both the panasonic and the pioneer(not sure of the models but they were close to the ones u mentioned)..panasonic is an allrounder, 'calm' non invasive sound, short on bass, even on mids and highs...pioneer is more to the boomy aspect of sound, strong bass, verryyyy short on mids, and for my taste good highs...so it comes down to what u prefer...