Can vouch for this

Tbh I definitely agree with the diy approach mentioned earlier. It’s a bit of a rabbit hole but honestly so rewarding if you have the patience for it. When I first started with my current setup, I was super intimidated by the balancing act - literally. A few things I learned the hard way:
- Balancing is like 90% of the battle; if it's not perfect, those motors will scream at you.
- I actually ended up making a custom counterweight because my setup was too front-heavy with my main lens.
- Calibrating the dead zones and motor stiffness myself instead of using the "auto" settings saved my footage. Not 100% sure if that’s the route you want to go, but basically, getting hands-on with the setup made me understand the physics of my a7 IV way better. Just be prepared for some trial and error - it's a learning curve for sure!

DJI Ronin SC2. Unfortunately, had issues with Ziyun. The Ronin's been solid for 2 years now.

A7IV's tricky. Payload is key. Zhiyun Crane M3S is decent option; its updated motor handles the camera with a smaller lens setup. Check its 1.76 lb capacity carefully, though!

DIY stabilizer? Might need practice. Zhiyun Crane M3, $400, could be a starting point.