Unfortunately have no experience with the Steve's Special, but still maintain the C5 is worth trying if you have the opportunity. The highs are smoother and rounder than some of the squeakier notes

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in my demo would have you believe & it has ample lows/is really thick sounding too. If you have a middy sounding guitar it's a phenomenal fit. Plus you do have ample opportunities for mag swapping if you are'nt really happy with it..
I'd just levelled my frets before doing that video & had'nt crowned them & the icepick might have come from a couple of improperly treated frets..also I have a tapped finger slide thing that I do with my picking hand which basically extends off the fret board & over the pickups that can have a piercing effect which I think sounds cool but some may not :laugh2:.
When I bought that Charvel it had been lying untouched/new/unplayed for years with it's strings off and there was a bit of backbow as a result of which some of the frets were uneven & needed to be worked on..it plays like a complete dream now after a bit of work, but I bought it cheap for that reason
Other things you could try..
A perfect fit sonically would be a Lace Deathbucker (my fave humbucker) .. thick lower mids & tight deep bass (not clinically so), slightly scooped & really open mids, warm round highs ...it will do everything you describe you need and more. Despite the name it's actually a very versatile sounding pickup & will work great for any style of playing. However it's aesthtics might be a problem for some (not me

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I just put a clip with it up in this thread in the amp section here.. it's a rough studio clip with my Doom band..
https://forum.seymourduncan.com/showthread.php?325667-Bugera-V22-or-Blackstar-HT50
The DMT Baker act I mentioned before is a great fit for my mahog/maple neck-through axe. It's like a JB that's had everything people don't like about that pickup sorted out (ie less "cocked wah" mids, tighter bass etc) ..but they seem to have stopped making them & they're hard to find...