I have built the DIII's and they are pretty good . They have a wonderful range and very clear mids and highs. However, for about the same amount of money you can build the Lyras. I think the Lyras are even better with a great sealed box bass sound and very clear mids and highs. Take a look at the Lyra design it is a true 3 way. I really like them better after building both speakers.

if cost was no object, would you build the the Eros?