I think all the amps you mentioned are different animals, but equally great. As for the EVH 5153, I definitely prefer the Stealth model for better distortion quality and tone. However, I voted for the Butterslax because if it's uniqueness and character. It doesn't to clean but has amazing distortion, tight low end, and can cover the spectrum of classic metal, rock, and modern metal. It has a lot of distortion but never sounds bad.
I think the Butterslax is too overlooked as a lead amplifier. In my opinion, it has sort of a Diezel VH4 channel 3 thing going on - not that it sounds like a Diezel, but in that it's one of the best amplifiers for soloing. It has abundant mids, and reacts to pick attack swiftly with low-mid punchiness. You won't get tired of noodling all day and night on searing, liquid solos. It also delivers great tone across it's gain range. Some amps lose something when the gain is lower, other amps get too saturated, but the Butterslax is kind of a marvel. It has more gain than you'll need but never sounds too gainy in my opinion. I don't know how Dave Friedman does it but, among all his world-class amps, I find the Butterslax to be quite impressive.