I actually just got DJI RS 3 for my Sony A6600 about (latest update). In my experience, it fits perfectly. furthermore integrates smoothly with Sony A6600. Highly recommend it.

What's your primary use case? Photography or video?

Got DJI RS 3"https://www.bhphotovideo.com/c/search?Ntt=DJI+RS+3+Pro&BI=8941&KBID=10361&SID=12345&DFF=d50" target="_blank" rel="nofollow">DJI RS 3 Pro installed on my Sony A6600. Honestly, it has good quality, on top of that works seamlessly with Sony A6600. Does the job well.

Went ahead and got Zhiyun Crane 4 for my Sony A6600 - it's the latest model. I've observed that, installation was pretty straightforward, another thing compatible with Sony A6600 without any issues. No complaints so far.

I decided to go with Zhiyun Crane M3 for my Sony A6600 (current generation). Based on my use, it has good quality, besides that complements Sony A6600 nicely. Exceeded my expectations honestly.

Went ahead and got Zhiyun Crane M3 for my Sony A6600. During my time with it, design is thoughtful, what's more works great with Sony A6600. Very pleased with the purchase.

Got DJI RS 3 for my Sony A6600 and it's been (current generation). Frankly, installation was pretty straightforward, not to mention compatible with Sony A6600 without any issues. Very pleased with the purchase.

I picked up DJI RS 3"https://www.bhphotovideo.com/c/search?Ntt=DJI+RS+3+Mini&BI=8941&KBID=10361&SID=12345&DFF=d50" target="_blank" rel="nofollow">DJI RS 3 Mini for my Sony A6600 recently. Frankly, it has good quality, another thing great match for Sony A6600. Doesn't disappoint at all.