Awesome vids, thanks! Alas the Diezel has to go for financial reasons, so no diezel or powerball for right now. Just left with my Voodoo nodded Splawn Nitro
I LOVE the Powerball II, and it's the heart of my "A" rig. Before this, my main rigs were an ENGL rack system (e580/850) and Mesa/Boogie Dual Recto Road King II.
PowerBall II is the only amp I've used for myself in three years now. I played the SE head on a fly-in date and didn't like it as much. It had a little too much of the Euro thrash metal tone, whereas the PowerBall II has a much more "pure" or "classic" high-gain tone. I wouldn't call it any better/worse than a Diesel, but certainly it's significantly evolved from the original PowerBall. Here's my in-depth review: