Yeah, for that price I think your setup is around one of the best you could put together. Like I said, other than the pure versatility of the Katana - I think it's other big plus is that it's an amp you can use in a lot of different settings in that you can play in your bedroom but you can also make it keep up with a drummer. Our amp is the same tbh - not the same volume capability of the full sized head, obviously, but we can keep up with a drummer and mic'd up, it could be gigged with too.
It's a great little amp and for bringing the brutality, I'd always prefer it to the Katana.
I think the Dark Terror is a cool little amp. Imo though, it's an even less versatile amp than our MH. Just that EQ shape knob for either an extreme mids scoop or an extreme mids boost. You can get good old school cranked amp on the edge of breakup tones with it, but with it's high gain tone it's sort of a definite one trick pony imo. My biggest issue with it was simply... I don't think I like Orange high gain tones very much. I think they're cool amps and a lot of people can sound really great with the various high gain Oranges out there. In my own experience though, I could never tighten up the low end to what I wanted.
I've never played any Victory amps... but I've seen loads of demo videos of them. I think they're all really impressive amps.