The 9618 has the best picture of any tv, Ive seen (unless you are allergic to the PixelPlus look) - and the sound is rather excellent as well. However, many people have trouble with the cordless rear speakers. This RF connection is not really a good solution. Too much interference, crackling - and even if there is no noise to be heard, the rear sound is too low and not very accurate. Philips thought of this - so they made it possible to connect the rear speakers with a cable. BUT: This means, that whenever you put the tv on standby, there is a loud buzzing noise from the rears. It never stops. At least this was the case with my set (36PW9618) and Ive seen it mentioned in a few other posts here as well. If you have this problem: Demand to have it fixed on warranty. I just got my tv back from repair - and the problem is solved. They changed a transisor inside the tv or something (the problem is in the tv, not the speakers). There is still a very faint buzzing noise, but you only hear it when you stick your head very near to the rears. Before the fix, the noise was horrible. I am amazed how Philips could overlook this.