I satisfied with mine (originally part of a 2.1 audio/HT system, now in a "low priority" 5.1 HT system). After a few years I find that I can hear it automatically clicking on and off more easily. I don't recall if I could leave it on full time, but since HT is a low priority to me, I'd rather leave it this mode.
At 50+ pounds I imagine shipping could be bit of a (cost/damage) challenge (like any used speaker).