I suspect keys are inherently no easier or more difficult for singers in general (instrumentalists are another story). I like E flat myownsef most of the time, when/if I get the choice.

With a nod to etaoin, I want to welcome you aBoard, Churl Pat, and just comment that every unmoderated board will have its troublemaker. Not much we can do about it as things stand, though many of us (including moi) have tried. I hope you will continue to contribute, despite that. It's good to have another Brit here; we need the input!