I owned the Original Advent speakers back in the day and thought they were okay, but not that special, and likewise for the smaller Advent.
I also bought the JBL L100's new... Initially, their "midrange presense" got my attention, but after owning them a while I realized how peaky they were. Traded them for AR 3A speakers and was much happier with those.
The DCM Time Windows impressed me although I never owned a pair.
Right now I have an old pair of Altec 3841 speakers that are very robust and sound extremely good in a vintage system with a '70's Onkyo receiver.
Magnepan's MG I Improved and MG-3 speakers made a very positive impression on me when I owned them (and were a lot of fun), but the speakers that impressed me the most (aside from the Infinity Servo-Static 1A's I couldn't afford), were the Acoustat X full-range electrostatic speakers with the original tube servo-charge amplifiers. Later, the Acoustat 2+2's would become my reference with some highly modified Acoustat servo-charge amps that used custom polystyrene coupling capacitors and 6LF6 tubes (wish I still had those).
I've moved on since then, but recall those days fondly.
