I did a lot of research on light stands before I bought three Impact stands (listed below).
The stands worked pretty well, but did not have the stability I desired. I ended up using my fairly cheap, but much beefier, background stands for remote shooting.
*** Impact 10' AIR CUSHION 4-SECTION LITSTD BLACK ***
I'm a pretty smart fella, but it is extremely difficult to really get a sense of what a stand is going to be like until you have it in your hands. I hope this helps some folks.
So I researched some more and it looked like the Avenger C Stand was the way to go. They are supposed to be "HEAVY DUTY," and that's what I wanted
So I ordered the following...
3 x Avenger A2033F Century C Stand - 10.75' (3.25m)
1 x Avenger D600 Mini Boom 4.25 - 7' (1.2 - 2.1 m)
Let me just say that these things are freaking TANKS...especially compared to the Impact stands. They do cost more, but I was blown away when I took the first one out of the box. Where the main pole of the Impact stand may be the size of a Quarter and fairly thin walled tubing, the Avenger stand is easily the size of a half dollar and much thicker tubing. Sure, they weigh more, but for peace of mind and stability...it's a no-brainer for me. The Avenger knobs are huge and made of steal, not plastic like the Impact knobs. The Avengers I have aren't air cushioned, but that's ok for me.
PS...the Avenger Mini Boom is built exactly the same as the Avenger C Stand. With enough counter weight I feel I could hang an elephant off that thing.
I'm an Avenger fan!!! I get it now!
Air-cushioning is over rated if you know what you are doing. 
