Regarding Line6 knowing them they will release a new flagship with even more bells and whistles. So many options nowadays it's amazing.
Regarding Kemper, they are still the leading company imho regarding stage readyness, reliabilty ! The sounds are still there after all these years. ok they could get into more fancy stuff as the beautifull screen of the prime. But in the end it just looks cool and is easy to navigate. I barely adjust setting on the kemper, once the performances are set it just plug and play ...
Imagine that they would come with a new firmware blasting the competition in space with new capturing tech (or oversampling or whatever you need to make something sounding even better then it already is) and still on the old tech from 10yrs ago :o
The only reason to choose other brands besides looks en UI would be to get a more flexible chain, 4 stomps , 4 fx is kinda limited, but not for me I don't use these complex parralel path and stuff like that. I keep it basic and it sound amazing .. having more options would be tweaking galore until you get sick of it anyway
plug and play ! That what I love
Raf
ps : one thing that also strikes me is that all these companies can use kempers basic principle to capture amps (with the space sounds being generated), and they get away with this ... component modelling is one thing but this is plain piracy of how to achieve a capture of a certain tone