Me, I’d have campaigned for an SX900 over the 700.
That chord sequencer is a game changer, allowing you to play in the chords for the first verse, then let it take over for the rest and get to truly concentrate on PLAYING the solo or comp. Especially if you want solo sounds that need a bit of bender (or joystick!), and what don’t, in truth?!
Plus, you can store the chord sequences, link them to a Registration, if the choir needs rehearsing and you can’t play, easy enough to set it up so all they have to do is press ‘play’… 🎹😎
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An arranger is just a tool. What matters is what you build with it..!