So, I'll tell you my THR/Kemper story...
The THR10X was my main home practice amp. The Brown II setting was godly. Great 3D sounds, tuner, batteries, portable, etc. Only flaw? It sounded hideous through headphones.
So I go and try the new THR30ii in July 2021 at the local Mom & Pop music store. It sounded good, and there was some definite improvement in some features. Bought it. Then within 2 days, I A/B'ed it with the 10X tones & preferred the 10X. Go back to the store, returned it, feeling defeated...
Then a couple of days later, I go to the big box music store uptown & what is sitting there, used? A Toaster! It was returned after 2 weeks, and it was $800 off the new price. Put some money down on it & then a payment plan for the rest.
Wow.
The Kemper has literally changed my life, my playing & reinvigorated my love for the guitar. Opinions are subjective & I'm not trying to rain on anyone's parade - but the Kemper *wipes the floor* with the THR amps. Better/more realistic tones, editing flexability, more outputs, better 'real amp' feel, multiple noise gates, pedals, EQ's & a headphone out that is absolutely god-like.
The tones this amp has under it's hood is incredible! Just my 2 cents & glad you love the Yamaha so much, man!