So I want to be a steadicam operator. I found a good used pro sled for a reasonable price. Now I neeed an arm. Pro, Masters, or 3A. The pro obviously is an excellent arm, seems to need very little maintenance and easy to fix in the field should you blow a cannister. I've worked on lots of jobs as an assistant with pro arms and never a problem. Oh yeah, its $20,000. The masters arm, very smooth and adjustable while weighted, great if you want to adjust moments before the shot. However If something goes wrong with it your screwed, and I've seen these fail not pretty very expensive just to be looked at and to fix, and you lose it for a few weeks. The fact that the mechanism is open to the elements it seems to get dirty quick. I have no experience with the 3A arm but i'm told it's very reliable with a reasonable purchase price for a new one. However I was also told that the 3a arm is very springy and not as smooth through the boom as the pro arm. Now, maybe i'm putting to much into this but the arm seems to be 90% of the system. I am just beginning so maybe I should buy a cheaper arm, however I don't need equipment malfunctions early in my career or at any point for that matter. So do I buy cheaper early until I start earning as an operator or do I get the best I can early to help my chances. Any advice would be greatly appreciated.