This!
I’ve pre-ordered two of Powercab Pluses (for stereo) and it would be my candidate for your consideration. It’s a piece of the Line 6 platform, and it will integrate with the Helix very well, and fully digital if you consider running it through the Line 6 Link interface. It does offer a nice fallback option with IR and speaker modelling if you end up not liking the FRFR experience.