This discussion was sleeping for a week, but anyway ... by chance today, I was listening to Joel Hoekstra's 2015 solo CD, Dying to Live - an excellent hard rock / AOR album - where, I was forgotten, Russell and Jeff alternate vocals through the album, with great performances. And those of Jeff better than the ones he did on Psychotic Symphony, no doubt. I really like Jeff, but by comparison, it's clear to me that Russel has a stronger, more expressive and more diverse voice these days. Probably it would have been a better choice for SoA IMO.