Take them all back to black and white, lose the shadows and reflections, and go from there.
I second this. A good logo has to work like that first and foremost. Lowest common denominator.
I have to disagree. Pixels are so retro / 1982 - but if it's that you want to sell, then... I mean that if you work with pixel-art you should be so good at it that you don't see the pixels. Of course if the point is to show the pixels that's the right logo.I like the bottom right the most. it has the most "pixely" design, and when the common person thinks of pixels they think of a graphics style comprable to space invaders- no round edges, or fancy sub-pixel rendering. So I think that if you used the '7' part of the bottom right and then a more pixelated font, but not too pixelated, it would look perfect, and fit the name.