When I first came home from the U.S. Navy I used a Shure mic, and I believe it was the SM58, but couldn't swear to it. It was considered the "Gold Standard" of vocal mics at that time, which was 1960. I played honky-tonk bars using that mic, a 100-watt Gibson amp and a 6-string acoustic guitar that had a portable pickup in the body opening. I still have the pickup, but the guitars, mic and amp are history.
The mic really sounded good back then, but that was more than a half-century ago. Since then I've upgraded many, many times, and now I strictly use a Crown CM-311A headset mic, which I absolutely love. No feedback problems - ever, great clarity, superb sound quality, and wonderful depth for my voice, which is a bit softer now than it was just a decade ago.
When I was still using handheld mics, which was also just over a decade ago, I purchased several mics, the best of which was only used for a few months before I went to the headset mic, a Sennheiser E-855. At the same time, I also purchased a Samson Q7, which is a fabulous mic, especially for the price. Just about everyone that I've talked to that used the Samson Q7 fell in love with the mic. And, not too many months ago, that mic was selling for just $29 from one of the online music stores. A lot of forum members grabbed them up and they were sold out in a single day.
I still have the Sennheiser E-855, Paul, and it's for sale if you're interested. I paid over $300 brand new, it was used a half-dozen times and in new condition. I'll sell it for $150, let you try it out, and if you or your wife doesn't like what it sounds like, I'll refund the full purchase price. Email me if you, or anyone else is interested.
Gary