Tonight, I went to Meltdown Comics to watch Chris Hardwick do a free hour of stand-up. I got there early because anything free really brings a crowd (today was also a frozen yogurt give-away at Yogurtland). A couple blocks from Meltdown, Guitar Center and Sam Ash sit directly across the street from each other like feuding hillbillies. I walked over to both and got some helpful perspective on what's available in USB microphones.
Directional characteristics might become a deal-breaker. Everyone huddled into one directional sweet spot might not make for great podcasting. It feels like kind of an unnatural way to carry on a conversation. Tonight, I've learned that the Yeti microphone may be more expensive than the TK 2020 but it has directional options and a headphone jack.
Damn. I'll probably have to get headphones too.