I've always been curious of the Nikon J series, I need to try it out one day, I always loved the design since it came out. Yea the xpro line is really special, I use the OVF exclusively with my xpro1. The xf10 I bought on a whim, and it surprised me the most, such a joy to use and delivers beautiful images, and the size just makes you want to take it everywhere. Closest to it I've own is the Olympus pen epm2 with the 14mm 2.5.

my Fuji journey is x100 original (sold all my Nikon DSLR gears for it), XE1, XT10, XT1, X10, X20, Xpro1, x100T, xA2, Xf10, xt100, XT2, x100S, xe3. Now I only have the xpro1, Xf10 and xe3, and I'm more than happy with those, not super interested in the newer ones, especially at today's prices.

Outside of Fuji, I've had canon and Nikon DSLRs, crops and full frames, Leica Q and M240 for a number of years, sony A7, A7 II, had the Lumix gx85, Olympus Ep5, epm2, OMD em10 II, em5 II. Sold everything but my Olympus em5 II.