Yeah, the camera size comparison site is very cool, but interchangeable lenses are a complication with it. I think they added that feature recently.
I tend to jump with both feet. When I fell for the A7, that started a chain reaction. I divested myself of all of my u43 except GH3 and the Panny f2.8 zoom pair which is the go-to video setup. For point and shoot I had Canon S100 and then Panny GM1. I had an RX100 a year or so ago but didn't really get on with it. Part of it was expectations. The problem is the files from the A7 spoiled me. Then we had a video crew come in to do a shoot on one of our projects and I documented it with the A7 and RX100ii. Worked well, but significant quality difference as you'd expect. The thing is at some points I had to shoot the RX100ii because the shutter of the A7 would have stepped on audio for the shoot. Hence looking for something silent with a big sensor.
I seem to go through waves where I'll swap out a bunch of stuff, then be stable, then a year or two later start getting CDO (that's OCD in alphabetical order).