Video that I shot to to test out my new Opteka GLD-400 47-inch Slider that I bought off the Amazon.
THe slider preformance was not consistant. On some shots I had to use Adobe Premiere Pro CS6’s Warp Stabilizer. But for the price of $100 it worth it.
They also have smaller size 23-inch Opteka GLD-200 and 33-inch Opteka GLD-300.