What has the lowest Noise Floor for an all in one recorder?

[ambient_jungle]

Anyone know what all-in-one recorder has the lowest noise floor which can be 
used for pro-audio?

I am a one man team when comes to recording. I don't have the luxury to spend a 
lot of time setting up my equipment and carrying a lot of extra gear. A tripod, 
batteries, the recorder, and some sort of wind screen is all I am usually able 
to bring. I record low ambient sounds and noises in nature, cities, and 
anywhere else I am lead too. 

I currently have been using an Olympus LS-100 with it's on-board mics, I think 
the recordings mostly turn out well, but am hoping to find something with even 
less noise for recording.

I know most here are familiar with the reviews from wingfieldaudio.com. The 
Sony PCM D50 currently is listed as the lowest noise all-in-one recorder. 
Problem, this recorder is already 5 years old and has already hit it's end of 
life support from Sony, but if it's the best for this class then it will have 
to do.

I know the Sony PCM D100 is out in other places then the US, but at a $1000 or 
more, it's too much out of my price range at this time. 

I know Zoom isn't known for quite recordings, but anyone know anything about 
the Zoom h6 with it's on board X/Y mics? Zoom claims the H6 now has an "ultra" 
low noise preamp, but I have yet to see any data to prove or dis-prove this. 
The Upside is the H6 is a new model and has room for me to grow with XLR 
connectors in the future if I ever go in that direction.

I appreciate anyone's thought's or opinions to this.