It's starting to be very clear to me that people don't like when things change even if it's closer and more authentic to the real amp.
This is a surprisingly fascinating topic for me. You see the same kind of things in the engineering / mixing world: so many people these days are chasing the "authentic tape / console / analog / vinyl / whatever" sound, when the older engineers who actually worked with those mediums were desperate for higher quality and would've killed for the fidelity that even budget hardware has these days.
Personally, when it comes to guitar amps and tone and feel and stuff, I only really care about authenticity if it sounds good, and if it gets me a tone and feel that I enjoy. I've found that in several cases with actual amp heads, but each one has had its quirks and issues that I wish could've been fixed or different. To me, that's one of the biggest selling points of modeling, and especially Fractal's approach: We can start with these amazing reproductions of physical amps, warts and quirks and all, but with the flexibility to
remove some of those warts and non-optimal bits and pieces. But, I also realize there's a very passionate portion of the community that yearns for true authenticity when it comes to modeling. I think Cliff's approach of saving the "FAS" models for those tweaked and idealized versions is a great compromise.
Personally, the 23.04 version of the 5153 Stealth model sounded and felt great, which was surprising because I never liked any of the EVH 5150 III amps. The new version
does sound and feel like a 5150 III, which is probably why I don't like it. The 6160 Presence taper bothers me, even though it's more authentic, precisely
because it's more authentic: I've
always disliked the presence control on my 5150/6505 heads, it's practically useless.
I do want to be clear though: I'm still be ecstatic with my AxeFX III, even with these changes. I don't expect Fractal to always make choices I agree with, it just so happens that
most of their decisions I do. So even though I'm bummed about the Presence taper and the tweaks to the Blue Stealth model, they aren't deal breakers, even if they're frustrating. There's just way too much good s--t in these units for me to be
too unhappy about it. I try to keep a healthy perspective with these things, because all too often I see people laser focus on the negative without taking the positive into account
(sorry, didn't mean to ramble on, sometimes I just start brain dumping and I can't help it)