I currently am using a Helix floor through a power amp into a cabinet.
(I have owned MANY modelers including all the “top tier” ones, and profilers, over the decades.)
Fractal, Helix, Tonex, Quad Cortex, Kemper are all equivalent in “feel” or “immediacy” depending on how you tweak them.
BUT, it seems to my ears, that when playing through your typical Fender or Marshall amps, there is an aspect to the “immediacy” of the sound and guitar/amp interaction that is difficult to quantify yet it DOES exist.
I don’t believe the perceived difference in sonic “immediacy”/feel is bias—at least not in my case. I love vintage gear and I love every new high tech thing that comes out!
I don’t believe that gear of any time period is superior ONLY because of the date it was manufactured.
Having said this, I prefer the “immediacy/feel” of SOME real amps more than any modelers or profilers.
Not ALL amplifiers are created equal; some (like a Fender Bassman”,) have a liveliness, a bounce, and a “3D” quality to them, and others sound “dimensionally flat,” sterile, and not as immediate.
But note: real amplifiers are NOT “better,” they just react differently to tactile input, and in their immediacy of response to your playing.
Amps, profilers, modelers, are all tools. The only best one is what works best for you.
All these tools have limitations.
Unless you are financially well-off, have roadies, or a place to play as loud as you want, you will have to pick the musical tool that works best for you.
In a perfect world, my gear use would look like this:
1. Playing Clean Electric Guitar:
59 Fender Bassman
Deluxe Memory Man
TC Stereo Chorus Flanger
EP3 Echoplex
Vintage Tube Spring Reverb
2. Playing Higher Gain Electric Gtr
Gibson Lab Series L5 or
Engl amp heads + 4x12 cabs
Revv amp heads + 4x12 cabs
Marshall amp heads + 4x12 cabs
Kraken amp heads + 4x12 cabs
Vox AC30 amp
With various gear such as:
TC2290
Alesis Midiverb 2
Vintage Ross Flanger
Roland RE301
Roland SRE-555
BK Butler Tube Driver
Vintage Fuzz Face
MXR Flanger/Doubler
Boss DD2
Etc, etc
I’ve owned nearly all of this gear throughout my life.
However, I don’t have the room to store all of it, nor the occasion/opportunity to play loud in large venues.
Therefore, I have settled on using what suits my needs best, while still being satisfying to me in the areas of sound quality, portability, and ease of use, while simultaneously offering me the greatest flexibility/functionality.
Axe Fx sounded incredible, but the Helix user interface (which didnt require a computer screen,) was preferable to me.
The Kemper sounded/felt better than the Helix, was EASY to get a great sound, but was EXTREMELY limited in functionality and fx routing. Not to mention that I preferred seeing a list of effects I was used to and KNEW how to tweak (as offered in the Helix,) compared to the “generic” list of delays, reverbs, and choruses in the Kemper— which you must tweak forever to get to sound like famous “name-brand pedals” that you are familiar with.
So, unless you have the physical space, finances, and geographic blessing of being able to play loud, then it’s all a trade-off.
But does the Helix “feel” worse than the Axe?
Not in my opinion.