A while back I got some P-bass pickups off ebay. One of the deals was a Muy Grande P/J set which I bought for the P pickup. This morning on a lark I stuck the J in an Ibanez TR70 which has the P/J pickup configuration and the unknown roundwonds which were on it when I got it. I like it, a lot. The only hang is you need short mounting screws or little sleeves for regular length screws because the mounting holes are only in the the ears of the bottom bobbin. The top bobbin is earless and the pickup has no cover (made that way). Haven't tried the Muy Grande P pickup yet, but I have a feeling I will soon. Edit: Sooner than I thought so I changed the title.. The P pickup was a big improvement, but my favorite sound out of the pair is the J with the tone knob in the 0-2 range although it has useable tone throughout. The P does add a dimension to the sound because it's so much more bassy sounding. Everything's just wirenutted in now. When I start to solder stuff the J knob system will have to go. I know many like it, but I like a switch as opposed to playing with two volume knobs. I think it'll end up with a 3-way switch and two tone knobs. The J pickup is a keeper - don't know about the P, but it'll do for now.