Thank you for the feedback. I've just finished new logos based in the rank of my designs an you recommendation of using serif typefaces. The new ones looks more elegant and expensive. I think we are on the right way.
Pol, number 89 is awesome. We sure like it a lot. But the rectangles are a bit too insignificant and the fades/gradients are going to be troublesome to etch into glass (this logo will be on glass panels and drinking glasses, etc.). Can you get the design to "stand up" taller - give it more height somehow?
I would like to try to modify #89 like you suggest but only the #1 ranked designer can submit entries during judging mode. Sorry. Think about it, and if you really want to see how it would look you can temporarily move the rank.