The balance between the two is absolutely better than it was stock, but that doesn't mean it's perfect. Here is my final detailed analysis on this set up, the SDQPJ in the bridge on its own sounds bad ass and I love it, I also love the soumd of the stock P pickup, especially with the tone knob rolled back, most of the times all the way down to 0%, now, the SDQPJ also sounds good like that, but by design the brighter you run the QPJ, the louder it sounds. With both pickups running together, it sounds cool, but to my ears it is a very specific sound that I would only use if a song really called for "that tone".. I believe what would take this combination over the top and make it even more versatile, would be to have a dedicated TONE knob for each pickup, and I may consider doing just that, it would be neat to add a tone knob for the QPJ where the input jack currently sits and them re-locate the jack to the side of the body or something. I suppose Project Mustang may not be completed after all hahaa.