find a rigid stand. four pillar models cost the most. i have one piece welded, two pillar target HR stands filled with sand and they still exhibit some fore and aft spring to them. not sure how it affects the sound as i wasn't willing to pony up for the four pillar jobs. to avoid accidents and damp resonances it's good to affix the speakers to the stands somehow. i used blu-tack, but i bet you can find some other kind of stretchy gum adhesive stuff cheaper - like the kind mom uses for hanging pictures without using nails. i'm really glad i did tho or they would have fallen on the floor a heap of times already. last, if ya gotta assemble the stand i'd make sure there's a good seal to contain whatever you use to fill them. oh, and use a funnel...it makes the filling alot easier.
