Harvey,
I have an original C3000, so I know exactly what you're saying... and you're right. However, that "harshness" can be compensated for (not totally, but somewhat) with the proper EQ settings. There are some things that a mic like the C3000 and C1000 absolutely CANNOT be used for, like recording a high-range female voice... yechh!
Been there, done that, and oh brother.. it was uuuuugly!
But, I was in that exact mindset you described... mistaking that high top-end for clarity and detail, until I heard some REAL quality mics like the TLM103 and the U87. After that, the C3000 started to sound like fingernails scraping across a chalkboard to me.
I still find occaisonal uses for it, but my NTK and NT3 have become my main condenser mics of choice.
If I win the lottery, a U87 is at the top of my list!
My latest dilemma is wondering if I should get a pair of ECM8000's or invest in a second NT3.
Any advice on that?