I might be a little late here to add anything but if the E300 was like the E500 (which I used to sell), the VA3,5 and 7 would be much better keyboards. The E500 and probably the E300 (lower model) were surely arranger keyboards. Everything with an "E" in it's name has been an arranger keyboard. The V series have tons more sounds, similar styles although more features can be used in the style process including style morphing, a much clearer user interface and especially a better sequencer.
Current prices at my store for the VA3 has gone down to $895.00 for a brand new VA3 and offers a lot of value for the dollar.
George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)