If you need the sound of a large diaphragm condenser mic but are on a semi-limited budget, I
highly recommend checking out
Michael Joly Engineering. He will
modify mics you currently own or
sell you new pre-modified mics.
For example, I found a used Rode NT1-A only a few blocks from my place in Chicago via Craig's List for $115. I walked over; bought it; and then shipped it off to Mr. Joly. He modified it to make it emulate
a Neumann U87, and it's
STELLAR. I use real (and sometimes
vintage) 87s whenever I produce or record artists in a newer but well-known Chicago
studio, and I really have a hard time telling the difference between a real U87 and my modded NT1-A. The real one seems to have a bit more warmth and "sparkle" to it, but it's minimal, almost to the point of being irrelevant. Granted, the modification cost twice as much as I spent on the mic, but now I have the sound of a U87 in my home
studio for 1/10th the cost of a real one (if purchased new. It was first released in '67 as a solid-state alternative to the 67; I'm fairly certain a late '60's or '70's model would cost more than a new one as is definitely the case with early-era 47s & 67s).
If I were you, I'd check out the
Oktava Mods website and see what they offer. You'll get the best results (in terms of guaranteed quality & longevity) if you buy one of their new modified mics, but you'll save money if you buy a used one and ship it off to them for modification. I'm tellin' ya, Michael Joly is the SHIT.
Hope that helps a bit.