I recently asked the most successful producer I know (Mack Damon...5x Grammy nominated...) about buying "serious" mics and pres and this is a direct quote from the message he sent me in response:
"As far as mics go, buy 2. Buy the SM7a or b....the most amazing $350 mic you'll ever hear. It makes people sound BIG and SMOOTH.
My friend Waylon over at Karma Mics has some amazing mics....he owns the plant in china, and they do extensive quality control, so you don't have to worry."
This is coming from a guy who has racks and lockers full of the most expensive, exotic boutique shit you can imagine...
The K35 is Karma's large diaphragm condenser, and it is regularly sold (from Karma not some random guy or anything) on Ebay for $169. They also make one with a tube in it, but it's about $350 or so, and they only sell it on their website.
Honestly, I had never even heard of Karma before he recommended them for my condensers... Anyway...I hope that helps!