This is a great thread!
I'm always looking for that little "extra" which moves an image from noteworthy to epic which can obviously be artistic in nature such as composition, or technical strengths and weaknesses which lend their flavor to this or that eco-system.
I've never owned MF but have always been impressed by it's results. I've enjoyed following Ken Duncan's work (Phase One user) and have friends that shoot both Fuji GFX and Phase One. It has impressed me over the years while just looking through weekly image forums on Flickr or px500 how often I'm drawn to images on a particular system or lens. Leica's, Nikon D800 series or Z8/9, Fuji GFX, Sony A7RIV, etc are usually the camera/sensors I enjoy the most.
While rethinking my eco-system last year I looked seriously into the Fuji GFX, but in the end chose the A7RV for it's flexibility and overall lens ecosystem. It affords me nearly MF mp level at 61mp as well as an APSC in "Crop Mode" still producing 26mp.
I had not really thought about the aspect ratio though... that is an interesting dimension (pun intended). I used to carry an OM1 daily when I worked in the prairies and badlands of North Dakota (think "Dances With Wolves"), I'll have to go back and see if I cropped less with it. Perhaps I can change the aspect ratio in my A7RV to a 4:3 and see if I tend to prefer it (not sure if you can do that with Sony).
I recently read an article about the official photographer from the recent Dune & Dune 2 movies who used a Fuji GFX, and loved the images she created... and hey, James Popsys now uses it!

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Truly enjoyed reading and gleaning from everyone's thoughts and experiences here, thanks!
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"The present is the only point where time touches eternity" C.S. Lewis
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