My friend DickieT (Thomas Turner), who some of you met at the arranger jams in Shreveport, bought the Korg Micro Arranger from JohnC (Bruno123)
He brought it over today for a setup/operating lesson, since he'd never owned a Korg.
It really is a nice-sounding little keyboard. I think it would work just fine for a nursing home or party, once you set it up.
However, it's biggest selling point to me would be for a light-weight backup kb, or to take on a trip, cookout, vacation, etc.
Having said all this, the Korg operating system has improved tremendosly since this technology was introduced. Everything is easier to get to now and there are a great many new features, sounds and styles on the PA900/PA3x. Of course there should be since the price is many times higher!