I can speak to the Chopper vs. Satch. I've got in the neck of one guitar and plan on getting it in the neck for 2 more guitars. It's my favorite "high power" single coil.
Under high gain, the Satch Track is clear, not muddy or overly bright. It retains more of that single coil type tone when compared to the Chopper which sounds a little too thick and heavy to me. The Satch Track also sounds even more single coil like when it's split.
I have it matched up with a 36th Ann bridge pickup by the way.