Mo, I can see you are upset with some of the feature losses on the E60, but, pray tell us, which features WOULD you drop off the E80 to save $1500?
And what 'glaring' drawback does the E80 have other than being heavy? Most Wersi owners are going 'THAT ain't heavy!'
Be realistic... what you REALLY want is a full E80 for MUCH less that Roland can make it. Me, I want a Maserati for the price of a Honda. I want a T2 for the price of an MM6. But I don't think complaining is realistic...! (or effective)
You can often find G70s for the mid-to-upper $2ks. THAT is the product you are asking for! Lighter than the E80, all the same control possibilities, and even BETTER output options, 76 keys! You virtually described the G70 in your post....
What's stopping you?
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An arranger is just a tool. What matters is what you build with it..!