Mike, that $600-$700 keyboard was not an arranger..It was the DisCover5 61 keys...It is SUPER for what you are requesting..

My suggestion for a mid price arranger keyboard that will handle the sequencer markers and a great sounding arranger is the E-60...great feel and 76 keys..great sounds and all of the covers for changing up the SMF's and styles..Used are around a $1000-$1100..

I am tempted to get another..and replace my 61 key controller..The E-60 was the next best thing to my G70..