Organ at least has the advantage of not being a sound you NEED to use the bender on a lot. Sax, without that, sounds totally wrong to me...

Mind you, organ without a swell pedal is just as silly!

Much of your need for organ depends on what you play. Play R&B, funk, NOLA funk, reggae, old school rock (Purple, Zeppelin), gospel, americana, you are going to want the Hammond bigtime!

And Gary... now you have an excuse to go there! Check out the 'Renditions' sub forum. Not a whole lot of BK-9 yet, mostly G70, bit of BK-7m.
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An arranger is just a tool. What matters is what you build with it..!