there is an eD thread going in the Speakers section of the AVS forums. The posters are mostly eD owners and are very satisfied with their purchases from eD. If the size of the speakers is an issue, you may want to pay a little more attention to the specs for the eD speakers, they run larger overall than the AV123 line.
I doubt you will find anyone who has actually auditioned eD against AV123, as they are both direct to customer marketers. Both have a return period, but return shipping can be expensive. Both have received good reviews and are quality builders..... I doubt you will go wrong with either, but my impressions from reading the boards is you will get a little more bang for the buck with eD.