Apologies for the essay below, but I always think the more information you can provide up-front the better advice you'll get :)
I'm ordering another Mayones Regius 7 string. Fairly standard specs on it (11-ply mostly maple neck-through, swamp ash body, 25.4 inch scale length etc) with the only real difference being a birdseye maple fretboard instead of the standard ebony and a Hipshot bridge.
I already have an ash Regius 7 with BKP Black Hawks, which I find amazingly versatile and have me covered for death metal style riffing and some mellower tones. My other main guitar is a PRS McCarty 594 with stock pickups for very clean stuff. I'm looking for a bit of a middle-ground between the two... something that can do cleans and break-up tones really well but also get very heavy. Big, expansive cleans and light crunch stuff like Solstafir to tighter metal, but ultimate high-gain chunk isn't the end goal. I'm a fan of thicker, mid-heavy tones and I value versatility and musicality over ultimate tightness. I owned a guitar with a SD Nazgul/Sentient set recently and although they were beyond tight I didn't find them pleasant or musical at all and I have an ESP with an EMG 81 in it that is honestly still the king for me when it comes to palm-mutes and metal. I don't want to get too far in to that same tonal ballpark.
I've read a lot of reviews and always been intrigued by the Black Dogs and think they should work here because on paper they're a great middle ground (big mid-focus to balance the ash/maple, not too hot) but I'm concerned they'll either end up not being tight enough/too polite or maybe a bit too aggressive (keep on reading about this 'attitude' they have).
For what it's worth, I'll be in standard B or Bb tuning and using an AxeFX so have access to a lot of different amp sounds and boosts to tighten things up and I'm not really trying to cop a specific tone as such, but would like something that could pull off modern Solstafir, Opeth-styled cleans (not distortion), Cult of Luna and on the heavier side of the spectrum The Haunted and Ihsahn.
With all this in mind, will the Black Dogs do what I want? Are there any other sets that would be recommended? I can't get over the thickness and how musical the Black Hawk sounds which makes me want a lower output version of it, which I think may be a Holy Diver, but I can't look past the JB association as I've never liked it in any guitar I've ever tried and feel like the Black Dog may be the better middle-ground between the BH and the PRS 58/15 LT pickups in the McCarty. It also seems like it'd be more of a 'different flavour' than the HD as I don't want something too similar in a guitar that is already specs-wise the same. Similarly the Juggernaut sounds interesting on paper but the naturally dialled in djent c--ked-wah sound that a lot of people report on is off-putting too.
Until I bought the McCarty I was set on putting a set of Mules in this guitar for for something very different in a 7 string and having my clean tones covered, so I suppose the Black Dogs are a safer bet in comparison for high gain work.