re: RG652BG or RG652AHM-AWD or RG652AHM-OMF (Prestige)
when it comes to tone zone, I have several experiences:
on basswood-maple board ( RG 3770DX), sounds great, big, full of life.
on Ash- maple board ( RG652MBQS) , a little treble sharp compared to the above.
on Neckthru mahogany wings flame maple top, maple neck-ebony fingerboard ( RG9670), almost sound like in basswood but deeper. Not bassy, but deep and clear.
on Mahogany with flame maple top- rosewood board ( RG 8570), simply dead, just dead. no other words to describe how awful it sounds.
overall, it's great all around pickup, it does many thing. I'm not sure about what you describe about modern metal, in my book it does everything.
in the past maybe I will replace instantly TZ with some other distortion class humbucker to suit my needs, but today TZ is just fine.
Maybe because I'm old now...