This Millenium arm is just the job for what is required of it. a link between sub and top. It, unlike a lot of tripods and speakers stands, does not require you to lift and put in a safety bar and safety cable to get up to the height you want. It has a click in button that will securely hold the bar at a few pre-determined heights marked by holes on the internal bar.
The piece itself is very robust and can stand up to the constant barrage of transfer in and out of vans and venues. The only criticism I think I would have for this product is that it is simply too large for some venues. We play in myriad venues in small towns in Ireland, some have VERY low ceilings. Even on the lowest setting your tops are quite high in the air. This, unfortunately requires us to bring tripods with us everywhere as well, just in case their is a clearance issue. Although this is as much a problem with Irish architecture as much as it is the stand!