The PSR-SX720 can display text, but the slightly more expensive PSR-SX920 has a dedicated connector for Display Out.

One thing coming from Korg... if you play left-hand chords and are used to playing a single note to trigger a major chord, you may find a PSR frustrating. Yamaha's only really good chord recognition mode is called "AI Fingered." A single note triggers a unison [1+8], why!? You have to press at least the root and major third to get a major chord. There are ways using third party software to edit a style's CASM section, forcing the arranger to sound a major chord pattern when a unison is recognized. However, this shouldn't be necessary. If Yamaha weren't so bull-headed it would be a user-selectable menu option!

Yamahas also lack a separate button for Bass Inversion. Not all chord/bass combinations are immediately playable in AI fingered. For example if you want Am7/G you might have to play Am briefly first and then G below A to trigger the chord. If you play G,A,C with or without the E it will recognize Am7/A (root bass.) Choosing "Fingered on Bass" permits the seventh in the bass with G-A-C-(E), but this mode requires you to ALWAYS finger chords in the desired inversion. This is inconvenient and leads to frequent and non-typical hand jumps. Some pieces originally written for organ with bass pedals would be very hard to play on tempo.

When arrangers overtook the home organ, Roland was the first to dial in a logical, professional scheme for assisted chord input. Yamaha may have deliberately gone down a different, and in some ways inferior path to avoid patent infringement. I don't think we'll ever know the whole truth! Caveat Emptor.