Published design like I did. That takes the crossover work out of it. The only downside is that you don't get to audition them ahead of time. For me, the speakers I've liked best have soft dome tweeters so that's why I went with the DIII design. That link earlier to the DIY Sound Group kits are something I would try now if I needed new speakers. A LOT of guys at AVS Forum are building and loving them. There are a lot of proven designs for the Dayton RS drivers over at Home Theater Shack. The experts of IB subs are over at the Cult of the Infinitely Baffled. I don't like sending people to other forums but DIY is not very active here. Sometimes you can find a great retail speaker where you would not expect it. The Linkwitz Orion is very highly regarded in the DIY circles - http://www.linkwitzlab.com/ . A few years ago in a head to head competition, A Behringer monitor available at Guitar Center beat it. http://www.diyaudio.com/forums/multi-way/177403-linkwitz-orions-beaten-behringer-what.html Those monitors are available via Amazon for $199 each all day long. Read some of the reviews.