I am purchasing a Denecke AD-20 from BigRay for my JB3/laptop (I use both) setup. Currently, I have a stereo AT822 mic. which I like. BigRay has some Core Stealth Cardioids that he's also selling at a very fair price. I'm wondering it it's worth it to upgrade to them from my AT822. Any opinions? Seems like there are mixed opinions about Core Sound products. Also, much of what I tape: band rehearsals and small shows, is very close up, so I'm not sure if eventually upgrading to something other than cardioid would be better for my needs. A stealth ability would be nice, though. Any thoughts?