OK, I'm persuaded. I ordered a Pro II yesterday, it arrived today and I'm letting it 'burn in' for a few days as that made a big difference with the R6 Gen III. Initial impressions are good, it definitely sounds better than the Gen III and it's less buggy (several radio apps don't work on the III but do work on the Pro II) so I'm happy, although I get the comments about the buttons, they're definitely in the wrong places and there's no feel for where they are when it's in the case but I'm sure I'll get used to it.
Congrats on your purchase !
If you don’t mind an expensive case, I can vouch for the Dignis case. With it the buttons are no longer accidentally pressed and they are easier to find. Although honestly I rarely use those buttons while using the DAP. I simply use the screen. The button layout on this DAP is certainly not very intuitive.