DonM, yes, I know you’re a real professional and you’re gigging with E-A7, which gives me optimism about this keyboard.
I’ve started to suspect that after a certain stage of progress after you get all you need, the next stage is eliminating things which you don’t need, otherwice it’s some sort of slavery, when the only option available is to add something, but not to remove.

I’m not a singer myself, but I use arrangers to provide backing for my instrumental parts. And now it’s rare that I use something besides bass, drums and pads. Your vocal part carries a large amount of information, so, I guess, you try to keep some space for it in your arrangements. So it happens that when real tasks begin, the priorities change a lot, and it’s no longer a choice of a keyboard which contains the most of the sounds and features, but choice of a tool you can actually use without unnecessary troubles and financial risks.