Out of the box I liked the Cat clean tone a lot better but the higher gain tone was awful IMO. I didn't try the newer versions as I sold it, but I think for a cheap amp the Cat 60 is a good pick. Better stock speaker than the Katana IMO.
Yeah, I agree the high gain wasn't impressive, but almost everything I play was covered with the Crunch, Boutique, & Chime before I got my Stomp XL. Since then, I run my Stomp in the Poweramp Mode and IMO those speakers really sound good across a lot of sounds. Now I have 4 XL presets with stomp versions of 2203, Plexi, AC30, and Dual Rec for the higher gain songs we play and roll off with guitar volume on Plexi & Chime for the cleaner needs.
I did the upgrade on mine and messed around with the new amps last week, but these are just amps that were released on the HX Upgrade 6-8 months earlier and are already dialed in on my XL so I know they can sound really good they just need to be deep edited through the software.
My Cat 200 mostly stays at our drummers house being used as my practice amp there and I have a DSL100H at home. It's plenty loud for what we do, but since I got the DSL, I'm moving towards tube amp heads vs SS. I have a Marshall SC20H on order and when it comes in, I'll probably be parting ways with the Cat not be cause of what it cant do, but just because I'm going in a different direction with heads & cabs with this band I'm playing with.
TBH, you really cant go wrong with either direction, Cat or Kat, it just comes down to what ecosystem you prefer, Line 6 or Boss. IMO, just another Android vs Iphone, Ford vs Chevy, etc. deal...