the c1000s are great mics for the price. i used them for a few shows before the upgrade bug bit
if you able to step up your price range, you might look into finding a set of akg 391's, they go about 450-500 used and are many levels above the c1000s
maybe look into some octava mc012's also, which can be had for very good prices unmatched
i just said that about the c1000s being big becuase compared to most of our SD mics that we run, the c1000s are 1.5- 2 times as big, and being FOB and in the sight line of people i would want something lower profile, but that is me