No brainer. A good mic just sounds better like a good PA. Good clarity will help you sing better. As far as helping a bad singer, no, but at least you'll hear him clearly.
I was using the typical Shures for a long time and a Guitar player in my band told me my mic sounded terrible. I never realized it. He worked at Sam Ash and got me a deal on 3 EV's for the band. What a differance !! Still use them today. I carry a Shure knockoff for people who want to do announcements. Sometimes I'm lazy and don't plug in the second mic and that will guarentee someone will want to speak. I hate it when they come up to me and go for my mic. I try to put them off until I can plug in the second mic.
And don't we all hate it, when no matter how well you explain it, they hold the mic 3 feet from their mouth or stick it in front of the PA speaker !!!
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer