I've gone thru most of the types they have. The 7-12 ft adjustable are 2" diameter. The baseplates won't stack with that size spindle. The 2-piece poles were best but honestly I've ditched all of it for my PB setups. I bought a $150 backdrop kit from a photography store and am using 3 of the 8' premium-quality drapes from EEI as a backdrop. I finally came to the conclusion that it was a waste trying to build a booth with automated camera. Guests pulling the P&D setup over, drunks can't comprehend what's on the screen, etc. I now have a PB tech who gives them directions, helps stage the shot, aims the camera and adjusts zoom. We're getting MUCH better shots now because of and our setup is easier/quicker.