I'm zeroing in on a USB mic for recording sound effects, and both of these get good reviews. I couldn't find a thread here about the pair of them, so here goes: Has anyone tried BOTH to compare? Any opinions? Is the Blue Snowball worth $140 vs. $80 for the Samson C01U? And what about vs. the C03U which apparently costs $130? (Or it's not out yet?) What is the benefit of "multi-pattern" mics, like the Snowball and the C03U? Will I care, for sound effects? (And excuse my ignorance--will a mic attach directly to my camera tripod? Do mics and cams use kind of screw hole by any luck?) TIA!