This is great input. I guess the best thing to do if possible is to try them out. I was originally leaning towards the Catalyst, but now I am thinking: for modeling tones I have the HX Stomp.. I am bound to get a tube amp itch, which the Blackstar would hopefully scratch while still being versatile enough for other things. But on the other hand, the Orange is also quite special, but it does a very specific set of things.. the Orange thing. While I love that, I am afraid I'd feel cornered and limited. If I had more money, perhaps I'd get both the Orange and the Blackstar.
Yeah I wish I had an amp that I could zero in on as one to purchase.
My biggest issue is that at this point I only really play at home at low volumes, so anything over 5 watts is completely unusable and even when I use solid state amps in 1 watt (or less) mode, I'm still barely cracking 9:00 on the master knob.
I had a Fender Bassbreaker 15 which I loved the sound of in terms of being a versatile single channel amp. You could dial in a clean-ish tone and add pedals, or you could dial in a rock tone and roll the volume down, or crunch and do both. The digital reverb even sounded great. It was an awesome blend between Fender and Marshall and came with a Celestion V Type speaker. But two issues: it was way too loud so I was basically on 1.5 out of 12 all the time. And the effects loop is garbage, so I couldn't run my Helix through it. If I trusted the effects loop, I'd grab another one and run an HX Stomp in the loop and be happy. But the build quality is notoriously horrible and I don't want to roll the dice again.
That also makes me not really trust the Blackstar stuff, even for the price. Sonically they seem pretty good though.
I have a Yamaha THR10X which is a good battery powered grab and go amp, and it sounds okay but it's not nearly as good as a modeler through decent speakers. But volume wise that's all I need to be honest.
I checked out the Positive Grid Spark, and that sounded pretty decent but the reports of having too much bass are a red flag, and not being battery powered misses out on a lot of the fun. The Boss Katana Air also looks interesting as it has the battery, but I had a full size Katana and it was just okay. I also had a Vox Adio for a minute and it was also okay but I took it back.
So the little bitty amps are out, and the cheap modeling amps don't float my boat.
I tried one of the Orange Crush 120 combos and it sounded great but it's just complete overkill for volume, size, and weight. I think the drive tone is better in their "flagship" SS amps compared to the cheaper Crush series. I wish they would update the smaller ones, because a 30 watt 1x10 would be fine for me if it was well built, sounded good, and had a good effects loop. But they don't really sound like the old tube Orange amps that I remember playing a lot about 15 years ago.
I guess the closest thing for me to a dream amp would be something like a Friedman JJ Junior with an attenuator. But at that price, I'm not sure how different that is against modelers I already have into a good 1x12.