As for Yamaha keyboards being spring-loaded ... not so.
As for "Roland doesn't make acoustic pianos ... how can their keyboards be any good" ... this is spurious logic.
What kind of case did you decide on? I also have a P-85 and am very happy with it. Are you also using the "X" stand or did you find another solution?
I was relieved when I got the keyboard home to find that it just fit in the softcase that I used with my old Kurzweil K1000, which the P-85 is replacing for gigs. I have a couple of X stands but I'm using the four legged steel speaker stand I used for the Kurzweil, which was too heavy for the average X stand. The P-85 is fine with the X stand but it's definitely more stable on the speaker stand, which is also easier to set up, although it's quite a bit heavier.