I initially bought an RX100 to fill the gap between my OMD M1 and my iPhone 5S. But, I ended giving up on it.1. I find it almost impossible to do serious photography in bright daylight without a view finder. 2. The camera was very fiddly to use. 3. The color on the JPEG's is way too cool and I was never able to correct for this in post processing.
I replaced it with a LX7 with the optional EVF. Unlike the Sony, this camera is a joy to use. And, in a back-to-back comparison of the same subjects taken at the same time with both cameras I preferred the LX7 pic the RX100 pic every time.
I recently spent 2 weeks in Paris with the LX7. I didn't think it was worth carrying the M1 for the small amount of time I would have for photos in grey January weather — and I didn't fancy looking like a tourist.
The pics were all excellent — including people and action shots taken at a night time PSG soccer game. Great to have an unobtrusive little camera with a a fast lens.
I would suggest that the RX-10 is most likely to be cross-shopped against the both the super zoom bridge cameras (e.g. Panasonic FZ-200) and MFT and APS-C cameras.
I tend to think of it as a quite big, and quite expensive super zoom with a considerably larger sensor and a shorter maximum zoom range.
For me, an enthusiast compact camera is one that I will choose when my iPhone 5S will not be sufficient but I want something much smaller, lighter and less obtrusive than my OMD M1.
I would have to really need the reach of that 200mm zoom to choose an RX10 over, say, an OMD M10 with a decent zoom lens.
I have a question about the EVF:
The specs say that it has 1.39 (.70X APS-C equivalent) magnification — and this is the number you use in your graphic that compares the relative sizes of viewfinders. However, unlike the cameras you are comparing it to, the GX7 viewfinder has a 16:9 aspect ratio. 3:2 and 4:3 are crops from this.
The rectangle in your graphic looks to be close to 4:3 in aspect ratio. I am confused. Is the GX7 really .70X when displaying a 4:3 image?
It seemed smaller than that when I tried it.
I really like the form factor and handling of this camera. The M1 is bigger and quite a bit more expensive.
The thing that is giving me pause is the GX7 viewfinder. I have to try really hard to see even a hint of tearing, so this does not bother me. I presume that the $15 eyecup will cure the ambient light problem. But, indoors in the camera store, the GX7 viewfinder image seemed to be smaller and appreciably less "natural" than the M1 viewfinder image.