I remove the foam pop screen...and leave it flat.
If I for some reason have to leave it on...I usually need the low cut engaged. Unless the vocal is super low in my range, I wouldn't entertain the mid boost--it's already pretty upper mid foward, IMO. Might be useful on a guitar amp--with the low cut and mid boost it will get closer to a 57 sound...of course, you could just use a 57.
FWIW...I don't recommend the mic lightly. I didn't try a couple mics and make a decision...I went through a LOT of mics before realizing it was far and above the price/performance KING. No...I'd rather have the vintage U67s and M269s...maybe even a custom tuned Korby...or a possibly a Manley...but, that's not close to the same price range. I think people mistake my opinion for being "my voice is better on dynamics"--it's clearly better on LDCs...but, REALLY expensive ones. Take the sub $2k (maybe $3k) LDCs, and the Sm7b yeilds a more natural sounding vocal. Both in tone AND maybe more importantly, how it records the dynamics of a vocal.
Plus, when I started to pay attention to male vox more (I mostly listen to female singers)...U47, U67, C12, SM7, were being used all over. And the C12s usually on voices very much NOT like my own. They're not using Chinese "inspired by but sounding nothing like" u47 clones. They're using U47s. It seems when that budget's not there, they reach for the Sm7.
I just finished mixing an album of mine...10 tracks. 3 sm7b. 2 U87ai. 5 Innertube U87i. They all sound fine. And all a touch differnet in end result. The Innertube is brilliant, because I can usually, literally, push the fader up, apply some compression and I'm done. The 87ai needed the most EQ/comp work to "get there". I printed some EQ/limiting on the Sm7b tracks going in--most of them were hardly touched at mix time--little extra squeeze...slight mid cut depending on context of the mix.
That's why I'm a big fan of the idea that a singer/songwriter who's putting together a studio should head straight for an Sm7b and an Sm81. Between the two, they will get solid tracks of all the typical SS things--vocals (male and female), acoustic guitar, percussion, amp...if you can't get a decent demo recording from those two...you've likely got greater issues than gear.
Rather than feed the Chinese mic o the week machine...just get what's proven to work.
Glad you're happy with it. FWIW, one of the things I truly miss about the Great River I no longer have? Acoustic guitar w/Sm81>Me1nv. Nice, balanced, musical tone. Not dark, but not shrill at all. Big, but not boomy. Give it a shot if you've got access to an 81. I wish I'd had the Sm7b to try that combo. It was actually the only preamp that really made the 87ai work for my voice as well.