Personally, I'm not very interested in boost pedals and I use a cheap Nux OD-3, which is more than enough for me. But I was quite impressed with the Maxon ST9 Pro+ in the video below. But, who knows, @killertone can extract good sound even from a can of ants...
These graphs are strange and certainly do not represent the reactive load input impedance in a correct way.
I know, TGP, but:
https://www.thegearpage.net/board/index.php?threads/how-well-does-it-reactive-load.2223180/...
I play 100W Jubilee through Engl 2x12 Vintage and it's really great. I like it more than through Marshall 4x12 G12 EVH.
Umm, it's without doubts excellent for thrash.
I don't know. Personally I liked the sound of LBX better than its older brother 5150III 50W. I didn't miss anything about the LBX compared to the 50W, rather the opposite. But I understand your point.
Also there is no hassle with firmware and software updates in case of "standard gear", whether it is a tube amp or whatever :). Personally, I'm quite tired of endless firmware and PC software updates. And then, when one really needs it, there is no update :D
I sold the Axe FXIII. Regarding the price point, these were for me the fundamental shortcomings of an otherwise excellent device and the main reasons for the sale:
1. guitar input clipping when using high output pickups - does this bother anyone but me? On a +2k device?
2. headphone output...