Hey everyone, just wanted to update this thread to let everyone know where I landed on this. In short: A-Bomb bridge and VHII neck won. Here's how I got there:
From the Titans I had in the guitar that I just couldn't get along with (too dry, felt like Aftermaths, which I also detest) I swapped in a set of Juggernauts I had in another guitar. These felt MUCH better, but I wasn't really getting the sound I wanted for this guitar. The goal was versatility, but still all-out aggression if called for.
So, after endless hours of reading and listening to audio clips, it came down to two potential pickups I wanted to try for each position. I ordered a VHII & Emerald neck, and a Black Dog and A-Bomb bridge.
Neck- This was a tough decision. The Emerald is great and very unique sounding, but wasn't what I was looking for in this particular guitar. It's sort of like a VHII with more articulate pick attack. Sort of like a VHII neck and Holy Diver neck had an alnico IV baby I guess lol. It wasn't that I disliked the Emerald, it's just that the VHII is SO good. Listening back to audio clips, it is absolutely a less-compressed Juggernaut neck pickup (makes sense). The VHII has this beautiful flutey / smokey thing going on with the mids (not tubey like an aftermath neck) while remaining articulate. It's probably my favorite neck pickup that I have tried in any guitar ever. Totally blown away.
Bridge- This was also a tough decision & took a lot of A/B listening to decide. I can see the Black Dog being an incredibly versatile pickup. However, just because it CAN do metal doesn't mean it was built for it. I just like having a little more power under my picking hand & that's where the A-Bomb succeeded. I found the mids of the BD to be very even, lending to it's versatility but detracting from it really having much of it's own character. The NB, otoh, has TONS of personality, grinds, snarls, etc. Just out of curiosity, I'll probably swap in a C8 magnet into the NB just to see what the C-Bomb is like, too. For the sake of versatility, I'm glad I went A-Bomb, though! One interesting note that I was not expecting- when tremolo picking leads on the bridge pickup, the attack of the BD was actually a bit sharper / harsher than the NB.
Thanks again for the input everyone!