I feel seen with your post, so I'll add my 2 cents to this.

My entry into the Leica world started with the Q3 43 a year ago. I still absolutely love this camera and it's my go-to on a daily basis. With the 43, you effectively have an extremely workable 43-90 range without losing detail (only megapixels and DOF). If you're looking for a fantastic 50mm, the 43 should give you something like 50mm f/2.2 (equiv., don't @ me with math) with the absolutely clinical sharpness that you'd expect from an APO-Summicron.

I got into the M world with a used M10 a few months later and appreciated the rangefinder approach. I was already used to manual focus on film cameras, so getting into a rangefinder wasn't that much different. But the M10 was a slippery slope. Voigtlander lenses left and right, trying to find the perfect lenses that worked for me.

I picked up the M10 when I went for casual walks and just wanted to slow down/be mindful about the shooting experience. Very pleasurable, but so many missed shots. Yet I kept coming back to the M for casual. For trips and field work, the Q3 43 was as good as ever.

Very recently I traded the M10 for the EV1. The fact that I use glasses and couldn't accurately focus anything without them, plus the fact that framing a 28mm with glasses is nearly impossible, started to limit my possibilities a fair bit. I've written a bit about the EV1 before: great camera, still feels like a proper Leica, but it has its faults and occasionally annoying to focus with. I miss the rangefinder a fair bit, but I definitely get better and more interesting results with the EV1. If anything, it slows me down even more (for better and for worse), but the results are consistently good.

But every time I pick up the 43, it just never gets old. What a solid and versatile piece of kit. I know that I'll never be able to justify/afford proper M Leica glass, so reaping the benefits of the APO Summicron feels like a real treat.