Guys, I am not defending the prices of Roland's "Entry level" boards[and they are their entry level units].

The PSR 550, isn't that board 32 voice polyphony?
It never worked for me...It is even a struggle with my Casio WK3000...Impossible to use on my jobs...Maybe one hour nursing home jobs.

Why the big deal with the limited on board sequencers...You are not going to sequence on the job...and $30 Powertracks will do a better job than any Yamaha keyboard sequencer[I mean any]..

Would I want to work with a EXR[s] keyboard...Nope, it lacks other things that I need, especially search while play features, and quick selection of tones and styles..although the performances can aid this in initial set ups..
BTW.I would trade my Casio for any EXR, and throw in a few bucks....My grandkids would love it..