You can't get any feedback with the IR remote, however, for me the only feedback I need is volume. Everything else is already set up - startup volume, processing mode, etc. are all preset to the modality.
I turn it on - I have mine set to start in default cable mode or I select BluRay or CD or whatever on the remote and all settings are preconfigured to run. Plus the MX900 runs macros.
My only problem using the IR remote is that sometimes the Power On sequence doesn't run reliably and I have to press ON several times. There is something wrong with that code sequence that I haven't figured out. I know that RS232 would eliminate this problem but I'm not sure the time and money to set it up are worth it to me.
Otherwise, the macros run by the URC-MX900 work fine.
I also have an AMX system but I have not yet integrated the two. For me, an iPad "remote" is not an option because I prefer a hard button remote that can be operated in the dark without taking my eyes off the screen or lighting up the room with a tablet screen.