Not sure why i have had such bad luck with the Superlux. FWIW Saxophoner, you can use washers to replace the plastic discs, which actually makes it easier to tighten, but when the tabs on the shock housing itself breaks, you have to get creative.
So given the weight of the Avants, now I am rethinking my stand purchase. I might go with something a bit beefier. I was considering the Lowel Omni, but the flat legs and single bracing doesn't look as sturdy as tubular legs with braces on each side.
http://www.lowel.com/stands.htmlI was thinking the Interfit 8-foot stand looked pretty good because it actually extends to 8.5' according to the maunfacturers page
http://www.interfitphotographic.com/Accessories/Product%20Pages/lighting%20stands.phpand because of its small footprint. I record in clubs a lot and people are always walking next to the stand and threatening to trip on the legs.
http://www.adorama.com/PALS8.htmlbut with the weight of the mounts, i may want to go for a couple of more inches spread to keep it stable, maybe with some optic yellow tape on the legs.
I'll probably order a couple more superluxes, too, just to have that option. Ya can't beat the price.