No experience with the new E50s but I do own a pair of A10s. They do exacly what I need them to do and more and they sound great for the $$$.
Buchardt e50 reviews
Looks like the first review is out. Very positive. I've been interested in the Buchardt E50 speakers (and the March Audio Sointuva AWG). I'm a bit surprised the reviewer hadn't heard of Sointuva (a commenter asked about this).