Hohem iSteady Pro2: https://amzn.to/2Ju3sRn
Spoiler Alert!!! For $99, you get a ton of features and it's compatible with almost all actions cameras. HyperSmooth (GoPro) and Rocksteady (Osmo Action) are insanely good but also have limitations. If you use RockSteady on the Osmo Action, it significantly crops into the footage in order for the internal digital stabilization to work properly. By using a gimbal, you can turn RockSteady off, giving you a full image without punching in, as well as providing stable footage. Also, you can now stabilize your Osmo Action HDR video with the gimbal. I'm all about portability and gimbals don't normally fit into my workflow, but I can see a huge benefit in using them if you take the time to bring it around and use them. In this video, I talk about the pros and cons of this very affordable $99 action camera gimbal.