Hi I just got my Shure SM58, in used condition, the other day. It came looking almost brand new with very few signs of use. So at half the regular price of a SM58 at Guitar World in Wilmington DE, which doesn't charge sales tax btw, this was a pretty good deal. Mounting it to the boom was easy and within minutes I had it working on the Kenwood TS870. By using the dummy load and monitor I was able to test it and first thing I noticed was the complete fullness of my voice. I found that the Behringer was getting my highs and some of the lows but the midrange was not there. The SM58 seems to capture the midrange and as a result that audio input was much stronger needing me to reduce mic gain and compression . The Shure seems to have an edge over the Behringer with complete range of voice. It may not be a lot to other ears but to mine I noticed that right away. Future A/B comparisons might be able to be done with local hams in the future. I'm not denigrating the Behringer by any means. For 20 bucks , it's at a price /quality point that can't be beat. It will work well with any Kenwood rig that I have. I just wanted to experiment to see if there would be a difference. It appears there is. I wish I had a scope to see the actual signal on a screen but all I have is my ears, a Vectronics dummy load and a pair of Kenwood HS5 headphones.