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I really don't like any of them, the colors are all off, except for the PS file but that's not a logo.
When I see the logo of Digital Media Tutors, I don't really get the new media/design/internet/flash feeling. They all look kind of lame, and old fashioned, but maybe that's just me. I would start by chainging the colors.
Edit: quickly added some color :p, the same colors as the italian soccer team uses, they don't look good actually. No more then 2 colors would be better I guess.

 
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