The Audio Technica BP4025 is a relative newcomer. B&H lists it for $649. It's a professional X/Y patterned mic and requires phantom power. It has a five-pin XLR output connector, 10 dB pad and low frequency roll-off. The BP4025 comes with a five-pin to dual three-pin XLR Y-cable that plugs into any professional mic input.
A simple foam pop filter is included, but for serious outdoor work, you'll need something more wind resistant. The significant difference between the BP4025 and other stereo mics is that the BP4025 has relatively large diaphragms; about an inch in diameter. These larger diaphragms grab sound with less selfnoise than mics with smaller diaphragms. Selfnoise exhibits as high frequency hiss and can really spoil the sound.