Looks like there's no simple answer to the original query. ;)

When I can afford one or two, I'm going back to the Sennheiser.

Right now, I've got a Shure Prologue 12H. A little tip if you're ever looking for good mics on the cheap... the Prologue series are commercial (stores, warehouses, etc) versions of the SM57 and SM58.

It works for vocals, although the small p.a. I have isn't the greatest-sounding unit.