[LAU] OT Microphone recommendation

Well, I ordered my microphone preamp, now I need a microphone.  Based on the archives of this list and my budget, I identified  three. What I mostly will be doing is:    (1) Recording voice, either speaking or singing  (2) Recording acoustic instruments (classical guitar, clarinet)  (3) Recording chamber music.      So the three microphones are:    (a) Shure SM57 (Is there a difference between the SM57 and SM57-LC?)    (b) Shure SM58 (Though which one: the SM58-LC, SM58-CN or SM58S ?)    (c) CAD gxl 2200 large diaphragm condenser $60    Just from my naive understanding, the SM57 seems like it might be the  best "general purpose" microphone for my needs.    Do people have advice or other recommendations? Thanks.    Eventually I will buy a second microphone for stereo recording.