When the Def Tech's first came out, they were meant to compete with the Mirage M series. You may be confusing the Msi series with the origional M series. The origional M's were very laid back and forgiving. They really went a bit too far in that respect. The si upgrade really balanced the speakers out quite a bit. If you could, though, you may be happier with the 3 or the 5's. I would still pick the 7si's over the BP 20's, but if you really want to see what the M series is all about, the 3 and 5 are worth it if you can find some. I think they just came out with the 7's because a lot of people didn't want such a big speaker.
Mirage M7si V Def tech BP 20
Has anyone ever compared a Mirage M7si to Def Tech BP 20??. The BP 20 has grown on me as it has very clear lifelike images with an even tonal balance., not to mention the large stage. Many speakers that have very clear images tend to be thin or bright. There is some actual meat to the images on the BPs. I would like to try a pair of Mirage M7si but based on items I have read they may be a little thick and not as transparent as the BPs.