How did I miss this topic?
I primarily work as a boomie, based in Australia. Here the boom swinger is expected to own their own pole. Which I am glad of as I know my poles are well maintained. Have worked with many that haven't been and that can turn what would otherwise be a good pole into a piece of Shit. While I don't clean my poles once a month, I will clean them as soon as I can feel them getting dirty and usually carry a cloth (or at least my shirt) to wipe any dust/water etc off as the day goes by.
Dan spend the money on Panamic, you will not be sorry(unless you want internally cabled, not possible with Panamic). They are a little heavier, but the most rigid pole I have used. Never have to release more than a quarter of a turn to easily adjust length. You can adjust the tension in which the pole slides in and out(have to pull apart the pole to do so). Which I have only done a couple of times when I knew I was going to be on full extension a lot swinging a KMr82 outdoors in high wind. Oh and a simple quick release system. But one of the most important things is you can separate ever part in order to clean the pole thoroughly.
Love my short/doco K-tek pole. When doing reality/doco/bag type work I like to be able to change the length of the pole during a shot. This is not possible with Panamic poles due to the compression effect. Alas it has a tendency to come loose. As for my long K-tek (6m?), politely, not a fan. Issues mentioned before, rainbow effect, creaking. In hindsight I would not have brought the longest pole K-tek make.
I too liked the older VDB poles the few times I have used them, although found them a bit flexi.
Sorry really didn't like ambient or Gitzo. That said have only used rentals that had not been looked after.