Dan Sherwood has done a lot of work to build his repository of test info. It's at http://www.sherweng.com/table.html for the few that are unfamiliar with it. He ranks rigs by ability to operate with close spaced interference. That might not mean a lot for a casual operator though. I'm not a contester so I am wondering what parameter would be the next in importance were I sorting the list to choose a rig.
I think everything that needed to be said regarding noise floor was said: it is irrelevant in our present environment.
I do remember however listening to shortwave on an old JRC 545 a couple years ago, when we had a statewide blackout in South Australia, and I was absolutely floored by just how silent the receiver was (and this is 20 year old technology).
I think the main metrics we should be using are cost/performance ratios where "performance" stands for whatever is most important for your particular style of operating.
Dj0ip (viz.
www.dj0ip.de) did some very nice work in 2019 to assess cost / dB of DR3 performance.
I am unable to paste the images of the charts here, but you can peruse Dj0ip charts here (keeping in mind these are 2019 prices):
https://www.dj0ip.de/sherwood-forest/performance-cost/You could do exactly the same calculations with any other metric that was significant to your particular situation (noise floor if you are alone on an island). Then for bragging rights, I don't know how to calculate that one!
Now, to quote Rob:
What do you need in the way of close-in dynamic range? You want a number of at least 70 dB for SSB, and at least 80 dB for CW. A 10 dB safety factor would be nice, so that means you would prefer 80 dB for SSB and 90 dB for CW. Now there are approximately 20 radios that meet that specification.
In my own case, CW is my only mode of operation and I have never been interested in competition, so while I am quite relaxed about DR3, I attach a lot of importance to good noise blankers and noise reduction. I also look for radios that are reliable, have decent ergonomics and I try to avoid "niche" brands.