I have a pitch/roll gimbal on the MiniTalon and it makes a great job. But most of my videos come from quadcopter flights, no gimbal there.
Aside from making my best to fly as smooth as possible, I do software post-processing with
proDAD Mercalli.
AFAIK only this Runcam camera (Runcam5 Orange) has EIS. But I find this inbuilt video stabilization to be inefficient and even harmful.
There is a new and somehow exciting functionality introduced in the latest Runcam5 Orange firmwares: an automatic generation of .csv file with gyroscope data that is saved to the MicroSD card. This allows for direct post-processing stabilization with the
gyroflow https://elvinchen.com/gyroflow/ (similar to ReelSteadyGO for GoPro cameras).
This project is still under development and looks quite promissing. However, at its present state (gyroflow 0.3.0-beta), the results I've got trying to stabilize video footage from my flights with gyroflow are definitely inferior compared to proDAD Mercalli. On the other side, Mercalli v5 costs almost $300 now, against $0 for gyroflow 0.3.0 ...