I've run omnis a lot on-stage lately, but before that I'd used my MK21 subcards quite a lot. I think the answer to your question is: it depends on whether or not the venues and locations in the venues from which you record are generally good sounding and generally not too chatty. If so, I think they'd work well as a primary stereo pair. Of course, the sub/wide-cards also sound great on-stage.
Listen to your past recordings a lot and be brutally honest with yourself as you ask: how do I find my current recordings in my typical venues when using cards (Oktava MC012 and CK31)? omnis (4061s)?
If you're generally happy with your omni recordings, you'll likely enjoy the wide cards because they offer a bit of directionality and rejection while maintaining that open, natural sound. If you're generally unhappy with your omni recordings, then you probably won't dig the widecards in the same situations due to their similar very open, natural characteristics.
If you're very happy with your card recordings, the wide cards will probably do the trick because they'll simply open up a bit the already great sound. But if you're not terribly pleased with the card recordings, the wide cards' more open pattern might very well accentuate aspects you don't like - crappy venue acoustics, chatty crowd, etc.
And if you have the MC012 hypers, and find yourself breaking them out a lot, that's a good sign that the wide cards may not satisfy you as your primary pair.
I know, not much of an answer, and all fairly obvious, but...that's my take. There is no definitive answer, of course.
Topic: DPA Wide Cardioid (4026/7) As Primary Mics? (Read 2570 times)