my Pc same as the 7424? Anyone use the Advanced 7.5" for the pc? I ordered the meguairs porter cable pc a while ago. I notice it is the model number it says 7335. I see the sites that sell the pads like the 7424, is the pads the same for both models? Mine looks just like the 7424 even with the variable speed rpm. I used it plenty of times and now im second guessing myself is it really as good as the other pc's i have read about on the board. Also i see they sell some 7.5" Advanced brand pads for the pc. anyone use these and did u like them or not?