SM58 LC : The classic '58

As others have said, there's a reason why the Shure SM58 is ubiquitous among performing bands. It's clear, sharp and has a little low-mid punch to add intelligibility and roundness to the sound. Feels good in the hand and is, of course, very well put together. Personally I think I prefer the model with a switch, but each to their own.

Yes, there are cheaper mics out there but if unless you're prepared to go out and try them all, the odds are that you will get something that functions but may not sound all that great. Knowing that many others before you have done all the research and have chosen the classic SM58 means you can rest assured that you are buying a great mic, trusted by millions.