I rarely use this slider in my small film company. It's great to have an inexpensive, very durable item like this to add a bit of variety and production value on the fly. It's not a complete solution to the more expensive *real* sliders on the market (and definitely not a complete cart or boom); however, it does a great job. For those who want to incorporate slider shots into their work, are experimenting or think they will only use this type of shot occasionally, this is without a doubt the best solution. The main downsides to this system (besides the very *small* DIY aspect for some people) relate to speed. First, it takes a bit of effort and time to adjust the bearings regularly - for people who place physical demands on their gear, this can happen every time you pull them out. Also, it takes a bit of practice to get the strokes smooth (it should be noted that high-end sliders also take practice), especially if your bearings are slightly misaligned - one trick is to use a rubber band to tighten your Smoothing out traction is like flattening a pan on a tripod with a moving head. When I say it takes a lot of practice, I mean not only that you get used to using it before recording, but also that you set up your recording during production and then spend a lot of time practicing and setting it up. field to get it right. I think it's a great product, I'm absolutely happy that it's in my box, but knowing its shortcomings will also help you use it more effectively and correctly.