yeah, I used to own a pair of Green Mountain C1.5i from 2003-2008. They are very good speakers & I loved them. They made music sound like music each time. I have no experience with the Dahlquist speakers so I cannot compare. Setup is important for these speakers so that you can ensure that all the 3 drivers integrate at your listening position thus dialing in the soundstage. The instructions in the manual are very good & should be followed. The manuf DOES know what he's talking about in this case. IMO you will not be disappointed w/ these speakers; the fellow I sold my pair to was delighted w/ them as well.
Hope that this helps.
Hope that this helps.