I primarily use the unit through headphones at home or a PA for band rehearsals. I have not used the capture functionality so far, so I cannot judge that.
For above uses, the ToneX pedal performs well. To my ears, it sounds as good as more expensive profilers or real amps.
The main positive point I want to stress in this review is the updated software. A lot of previous reviews complain about the earlier UX of IK Multimedia's software, which, I agree, was pretty bad.
However, recent updates not only added delays and modulation effects to the pedals (and free of additional charge, nevertheless), but also HUGELY improved the tone design workflow.
With the updated software, one can finally edit presets live on the pedal, filter functionality is well thought through and drag-and-drop is pretty intuitive.
In my opinion, the software went from really confusing to very well designed.
Besides that, setting parameters on the pedal itself is not super straightforward due to the limited screen, so it takes some time with the manual if one wants to configure more "subsurface level" settings without using a computer. This is why I deducted one star from "handling".
The second shortcoming is that in my instance, the headphone jack developed a malfunction where one of the stereo channels emits a high pitched white-noise. This was not the case in the beginning, so I suspect a hardware fault, which is why I removed a star from quality.
The pedal itself though feels well made and sturdy.
To conclude:
It does what it's supposed to do, sounds good, and the new software is a substantial improvement.
The interface on the pedal takes some time to get used to though.