[AMRadio] Mic opinion

[CL in NC]

A friend of mine has a Collins SM-2 mic feeding a 32S-3 that appears to be anemic audio output wise so he is looking for a new mic.  I have a Shure mic made for Collins (yea, its gray and says Collins on it, whoopee) and it put out plenty of signal such that the mic level pot is lower than 12 o'clock on the dial, while the SM-2 is around 4 o'clock.  What is the consensus on the Heil Sound GM-VINTAGE for tube gear?  I did post this on the Collins email chain, but sometimes a viewpoint not muddied by love of Collins helps.  Anybody have a line on a good tube gear mic company that is not Heil?

Charlie, W4MEC in NC