You seem to have a lot of pickup struggles, can I ask what amp/signal chain you are playing through?
Pickups are great but it's a small part of the overall equation. You can have the most perfect 24v modded EMG-X-X-X setup and if you're playing through a Bogner Uber with the bass turned to 10 it's gonna be mushy, if you get what I'm saying.
I have a lot of guitars equipped with EMG 81, 85, 81-X, 85-X, 89, S, SA, SA-X, plus Duncans, Dimarzios, BKP's, and none of them sound mushy except through amps I have dialed to be mushy...