Anyone looking for crystal clear vocals should do exactly what NPR does: Stick a Neumann U87 six inches from the mouth with the bass rolled off and use a P-pop and Bob's your uncle.
Money will be an issue with the U87, so you can look for good clones; there are a few in the market.
Boy oh boy, I can't stand that sound. Must be years of being trapped in other kids' parents' cars, who were educated and listened to NPR. I just wanted to listen to Big Douche and the Boys talk over the intro to Enter Sandman, like my high school dropout parents would.
The mic has a switch on it that imposes a hardware high-pass filter to counterbalance the proximity effect you get from being close to it. Since the mic is a cardioid mic (directional sound pickup) it would normally pick up a great deal of extra bass due to the geometry of the cardioid capsule (radio announcer sound, big and deep and bassy). The switch lets you take away that bassiness and the pop filter prevents the mic from going 'THUMP' when you say 'P' into it, and the combination of these things gives you that super-present, 'NPR interview' sound.
Most studio mics have a setting to taper off the bass end of the spectrum. A pop filter is a grate/net that sits between the mic and mouth to stop letters like ‘p’ sounding like a blast due to the air flow.
Money will be an issue with the U87, so you can look for good clones; there are a few in the market.