Ok, I have the Blackjack ATX now and I am very pleasently suprised by the sound I am getting from the Blackouts!! The main thing I found was that I didn't need to adjust my palm mute position to get the chugga chugga sound but that could be to do with the guitars thenselves rather than the pickups, also, I found the Blackouts to be just as noisy as the 81-7s. A quick swap to the 607b with 81-7s and I found the tone to be noticably brighter but not as deep/full. The strings need changing on both my geets so I will swap a blackout in the ATX for a 81-7 in the 607b when the new strings come in order to get a more true sence of the pick ups. Either way, having both pick ups, both light and heavy woods, I am chuffed!!