I got the DiMarzio humbucker to upgrade my PRE SE 7 string guitar. The DiMarzio gave me the precision I was looking for. My main guitar is a Majesty, so I lack the high-output that JP humbuckers have. I also think the tone is a bit too bright for my taste (still need to dig into my Helix to dial in the right tone, so this issue should be manageable). When you play djent type of riffs (fast, fat, loads of distortion), it somehow feels not "right" (again, certain elements could be equalized).
All in all, this was a good upgrade. I can recommend this product.