Been building a collection of ADS speakers for some time now, so far:
aDs 400
a/d/s - L 300c
aDs - L 300
ADS - L400
ADS - L520
ADS - L620
ADS - L880
ADS - L980
ADS - M12
I really don't need this many sets, yet I can't see selling any for a while.
As for the sound, each has their merits in certain settings. For more critical listening, I have the 980 and 880 stacked, and they sound wonderful, play together nicely.
If my curiosity keeps me looking, I might add a L series tower to the list: 1290/1590 perhaps.
i just love their sound, they make most music sound great.