these are some of the best SDC mics out there... they have won shootouts on many isntruments versus vintage AKG 451s and Neumann KSMs etc... their extended low frequency response make them a cool choice for room mics too, especially if you have omni and figure 8 capsules for them. If you're looking at a pair of these buy them. I also had a par of matched Rode NT5s but I kept the Oktavas. Even if money's no object for you I still recommend a pair of these great microphones.
Having used these on a wide variety of sources, they are definitely viable alternatives to some of the more expensive options out there.
The ones I have all have the 4 capsule kits, and the versatility you can get from one mics body is superb.
Quite a lot of handling noise, and not the best for super quiet sources, for sound design elements and the like, but great on "normal" range stuff.