asub... we like the strong typeface, but would like the lettering to be a little "taller." It seems a little squished as is (height-to-width ratio is too skewed toward width).
We like that the energy representation is simple and in line with the text, but this particular design seems too close to the well-known symbol used by BP.
We are also going to remove "web 2.0" from our suggested logo styles, just to make the logo more easily transferable to print media.
#4: We think the mark on the left might be moving too far away from what we'd like at this point. The mark doesn't convey any particular meaning. However, we like the gradient and new height on the text.
We were looking through your profile and were particularly impressed with your logo design for Sapient Technologies. Could you try a more "classic" style like that for us please?