I'm currently amp hunting myself, and yes, it is a pain in the arse, especially in the gear wasteland known as South Wales, but that's another matter.
I've tried a Mode Four, and I was really disappointed. It just seemed liked there was no depth to the sound at all. I have a feeling that, because it's so powerful, you might have to play it at stupid volumes to get a decent sound out of it.
Either that, or it's the same shitee sound, just louder.
I don't have anything against hybrid amps, I play one at the moment, but the Mode Four just didn't have a decent tone to my ears.