I can’t do what some forum members do, having multiple camera systems. Because of choice anxiety.
Yes, that would be me.
The way I deal with the anxiety is to now and then re-evaluate the cameras I have, and maybe reprioritize. I just went through that process with my Sony a6700 aps-c camera. I had mentioned in a post quite a while ago that I was divorcing the a6700 as my small carry around camera, in favor of the S9. I've had quite a bit of experience with the S9 now, including a nice trip to Rome, and feel I'm in a good place to compare it to the a6700. Surprisingly the a6700 fared well, and it is back in good standing.
Here is where the a6700 stood out:
1. Smaller and lighter, with the Sigma 18-50mm asp-c lens. This is important for me.
2. It has a viewfinder, not a great viewfinder but a viewfinder nevertheless.
3. It has 14 bit RAW. (The S9's 12 bit RAW bit me a few times.)
4 It has a mechanical shutter. (So it can do flash photography.)
5. It runs full frame 4K60p video, which I tend to do more than I used to.
6. It has All-I video formats.
7. Geotagging stays on and runs all the time.
8. It has a headphone jack. This is useful from time to time.
9. It has a hotshoe, which I can use a flash or for a hotshoe mic.
10. It has gyro data based video stabilization (with post processing). This really does work well; not as convenient as the S9's great stabilization, but better if you take the time to post process.
11. I had had issues with the Sony 70-350mm asp-c lens, where I just could not get sharp telephoto pictures. This is a main thing that turned me off with the a6700. And it killed any dream I had of replacing my m43 gear with aps-c gear. Well, I finally discovered that this lens doesn't like AF-C focusing, but it really does love AF-S focusing. I now have some of my best telephoto pictures, taken with this lens.
And the S9 stood out in some areas:
1. It is full frame, with more dynamic range and less high ISO noise.
2. It has a waveform monitor, a big deal to me when filming HDR video. With Sony I need to use zebras, a second best solution.
3. It has 6K open gate video, also a big deal.
4. Video stabilization without any post processing is as good as it gets.
5. It has the high resolution mode.
6. It has the convenient LUT system. I have not used this much.
Other factors:
1. I tend to prefer Panasonic color to Sony color, although they are both awfully good anymore.
2. I prefer Panasonic's user interface and handling to Sonys.
3. The Lumix 28-200mm lens is unique, and a benefit for the S9.
4. The a6700 can also use Sony's full frame lenses. I have the FE 4/PZ 16-35mm which is especially nice with the a6700 for video.
5. In terms of filming a6700 video with multiple cameras, my Sony A1 color matches the a6700.
6. Sony has Clear Image zoom, which is like the S9's Crop Zoom. That is, it has and added 1.5X variable zoom when shooting 4K. The S9 implementation is nicer, but the a6700 version is okay.
The bottom line, the a6700 slid to the front as my carry around camera. A pending question, can it displace my m43 gear?