Full Airplay requires Apples DRM which they don't license. XBMC has basic Airplay support (no DRM media or display mirroring) however the current XBMC box the Pivos XIOS does not do BD menus so ripping to BD ISO is a waste of space and time.
HDI Dune have an XBMC based player in the works (Dune Max HD 3D) which does supports BD menus via their own internal media player plugged into XBMC so that might be worth waiting for but I've no idea when it will come to market.
PCH a400 added airplay but not sure how much is supported in it. I dont own any apple devices to test, and right now there bdiso playback is shaky. so its a wait and see on that purchase if you need both.
I rip movie only BD-ISO... Does the PH play those ok, and just have problems with BD-ISO w/menus?
Right now its hit and miss, they have been putting out a firmware a week trying to fix all the issues but I cant say 100% sure it would work ok for you, So if you need to buy now skip it but if you can wait a month I would wait the month and see how it turns out. Last I herd the ISO playback issue was the top of the list to fix