I only used this mic for heavy vocals in recording and in live sessions. Our vocalist loves cupping the mic and when he was using my Shure beta the feedback was just too much to handle.
But that's not the reason that I bought this mic, Glen Fricker (SMG studios on youtube) recommended it, and I'm happy that I took his advice.
With the beta, my screams and growls sound more "black metal" and sound a bit distant, which is great, gives a great atmosphere. But with the lewitt, man, the vocals just hit you in the face. Great for death metal, punchy as hell, cuts right through the mix.
Can't say anything about recording guitars, need to try that out when I have a treated room to do so, but for now, I'm happy with the product.
It also seems sturdy and VERY well built. It's heavy and nothing seems cheap on this mic. It's a great mic, no cons to it.