The SM57 as a vocal mic (recorded dry then with EQ):

https://www.youtube.com/watch?feature=endscreen&NR=1&v=MHBB42rbkJo

This is the sound that I personally prefer for vocals.

Notice the caveat about counterfeit/fake SM57s flooding the market and that music stores will say "It not a VOCAL microphone!" I wish I had a pfennig for every hit that was sung through an SM57. Further, it IS an excellent instrument mic. I used it on acoustic guitar for years. Just my humble opinion. Your mileage may vary.

My son recently bought an expensive AKG and, to my ear, the SM57 sounds much better, FWIW.