I asked a similar question on Gearslutz, and everyone said to avoid the Sabra stuff and get the AEA bars. Which I would love to do if i had the $300 (or whatever) for the 17-inch bar. Everyone seemed to think the Sabra stuff was too cheap and broke too easily.
I was mainly looking for something that I could mount two G7's on, either in ORTF style or vertically so I could mount Blumlein. You can buy hexagonal bar up to 6 feet from McMaster-Carr. So are the sliding mounts sturdy enough to hold large mics if the bar is vertical?
If needed I could set the sliding mounts and then drill them into place and just have the one bard for vertical only.
Daniel