The KSM27/SL is a very low noise and clean sounding microphone that shares the same diaphragm as the KSM44/SL. It's a solid mic that sounds true to the source.

The KSM27 question has been kicked around here for a few days now, here's a recent thread:

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get it...you'll love it.

i bought one a few weeks ago and already want another one. not bad at all for the money. i actually like it on some stuff better than my AT-4050 and NT2-A. if you're patient, you can get one under $200 on eBay, which is where i got mine.

-dave

I'm not too knowledgeable when it comes to audio gear or even in how to use most of them with their respective applications, but I've still managed to get an amazing sound out of my KSM27 through a cheap Behringer mixer.

Can't say I've mastered putting it to instrumental recording, but I'm a voiceover hobbyist, and for voices, it sounds just absolutely amazing.