You may not be using the Red anymore . .
I can see this is an old thread. I use a Grado in a Rega 250 but changed out the counterweight with one that has the hole higher in the round than stock and it is made from metal along with a metal stem (available from several manufacturers). I use a Koetsu Black MC- first generation- on another deck with a heavier arm. Honestly, I haven't compared the two side by side but I'm pretty doggone happy with my Grado. It is a wood body Sonata Reference. I just posted a recent experience I had that improved my sound further under "Verticle Tracting Angle" altho I spelled Verticle Vericle. What I've written applys to ANY cartridge. You're quite right about female vocals and a mid range fullness in general with this design. I think it's almost a trademark. What are you using these days?
Peruvian- Blade Runner, right? What a vision Ridley Scott gave us.
Basite- Denon should re-release the 103C or, heck, was it the 103D. The D, I think. I auditioned one of these along with an FR years ago and remember the speed and excitement listening to jazz. I think this cartridge would fit well in today's mix. Must be some reason.
Later, I see you are still using a Red, JM. I'd be interested to know something about that wire mod if you gotta a mind to tell me.