I've got a pair of JL Audio e-110's on the way to complement ATC SCM 19A actives and am looking at acoustically and cosmetically better ways to get them off a medium shag carpet (over concrete) than the stock feet. From what I can tell, and ruling out spikes, there are isolation feet (SVS), isolation stands (IsoAcoustics), isolation pucks (IsoAcoustics) and isolation pads (Auralex, Ultimate Support, Primacoustic). All of them get very good reviews from users. Crutchfield (U.S.) carries many of these and likes the Auralex Sub-Dude. Others prefer the three-layer Auralex ProPad or similar models from other companies, although they are narrower (7.5-9"). Size is a consideration. The e-110s are 13.5" wide and 16.5" deep. It's not necessary to cover the whole bottom, but OTOH cosmetically I prefer it to look decent if smaller while not having a pad sticking out if larger, at least in the long run (e.g., the Sub-Dude is 15x15, so would want to cut it down eventually). The range of heights is 1" (Sub-Dude) to 4" (IsoAcoustics). Any thoughts, suggestions, experiences? Thanks,