Msteein,
I have both the AT 822 and just picked up the AT 8022 this week to compare. They are both excellent stereo condenser mikes.
I have gotten many great sounding recordings from my 822 both in my studio and in field settings like jazz clubs or in one instance on a subway platform. Audio Technia is no longer making the 822 but, it can still be found pretty easily with a Google search.
That said, the 8022 is considered the alternative to the 822. Both mikes come with two sets of cords, one set with left and right quarter inch plugs for use with a mixer or other professional level equipment and another cord that terminates to an eighth inch stereo plug for going directly into the mike input of a minidisc recorder or such.
I am finding that for the same price as the 822, at B&H anyway, the 8022 is in fact an even better sounding mike. wider dynamic range, less flat sounding...brighter and wider sounding. I would actually like to sell one of my 822s (I have two) and get a second 8022.
In another topic on the forum called Live Recording I posted a link to some A/B comparison recordings between the 822 and a Sony mike called an ECM-MS957, a very expensive and awful sounding mike. The thread is called Live Recording Using MD and Transferring To CD by Samantha D.
I'm pretty sure my links are still active. I'll try to upload and post a link for an A/B comparison between the AT822 and the AT8022 and that mike that comes with the M200, that DS70P. The difference will amaze you.
I sympathize about the cost of a high quality microphone but, having a high quality digital recorder for mike recording is pointless unless you have a really good mike. That is the first link in creating the signal that will be recorded. And remember that all live recordings start as an analog signal. If your mike is low quality, the results on you high tech recorder will be disappointing. The DS70P is really best suited for recording speaking, not music. I'll try to get that link set up soon for you.
Best,
-J