I'd personally get the 4061's... for open or stealthing.
Yeah, I think the 406x sound better - but they're more expensive and require additional components (adapters to allow running off phantom). Depends on priorities, I suppose.
True enough... I actually think they require less gear - battery box from SP will do you fine! But, they are more expensive than the Octava caps, I'd assume. But, they are SOOOO worth it, IMO.
You are talking about the ebay ones, right?
You can't send them p48... what might be the best thing ot do is wire them to a miniplug, and get an sp bb for power - and run that into a pre/ad.