Edit: I take it back!
To recap, I was complaining about the cold, shrill pinch harmonics I was getting with the Fireball, but I spoke too soon. After tweaking it and cranking it, I realized it's not as bad as I thought. Some new tubes will probably be the icing on the cake.
Also, I'm coming from a DSL100 which delivers beautiful pinch harmonics. I really, really want to try a fucking Invader now! I didn't even know it had EL34's until someone mentioned it (on here... I think).
So yeah, never mind.