I've had my ATC 35s for about a year now - found it amazing to hear some of the negative posts in this thread. Whilst the sound may not be to your tastes, to deride them in such a way strikes me as unbelievable.
The mid range dome is what made me buy this speaker - I listened to the competition from PMC and Totem but was won over by the ATCs. Regarding bass, it certainly is not as heavy as the other speakers I listened to, but this was exactly what I wanted. I presume this is partly due to the fact that the speakers do not have a bass port at the back like the PMCs, but I should add that if I turned the volume up on the PMCs, the bass driver hit the stop which I found most unsatisfying.
I talked to my dealer the other day about the active speakers produced by ATC - I had considered these purely from the point of view of reducing the number of black boxes in my listening room. He was quite negative about them, saying they were very bright sounding. Obviously I would be interested in hearing for myself, but for now I'm very happy sticking with my SCM35s.