I recently read an article in Stereophile Guide to Hometheater and the reviewers seems to be of the opinion that the PS audio unit is better than the Monster 5000 but not by much. I was surprised. I have not heard either and can not make a recommendation. But I would listen to both before buying either and suggest you do the same. A few months ago, I listened to a Richard Grey unit. When the saleman left the room, I unplugged it and directly plugged the amplifier into the wall. I could hear no difference but do not claim to be an authority on the subject and realize many factors such as how clean your power is to begin with affect whether you will hear improvements. I then asked him to explain the benefits of the power conditioner. He went on and explained how much more detailed the system was with the unit in. I thank him and left without ever telling him what I had done. Needless to say I did not buy the unit. So until I hear the PS Audio unit I will reserve judgement. Suggest you spend a great deal of time with any such unit to evalutate it's performance on several occasions. I am not trying to start a war here just relate my own personal experience.
