This looks great - #18 is definitely on the right track! I like the combination of the logo with the D+O working together. Can we maybe add some flooring underneath this, (Like the flooring in #2) similar to the flooring our displays have on our website renderings? (Displayoverstock.com) -- Also, the text is a bit too soft, and introducing either Red or Blue would be great to give it some more color.
Looking great - thank you!