Just messed with the celestion and borrowed a AX8 (traveling). We used a Duncan 170. Sounds just ok. Stock Fractal settings. Clean sounds the best but crunch amps sound like crap. Maybe dialing in eq will help?? Metal style amps sound kinda like helix or any other modelling product( that sizzle sound) In the end I base tone quality realistic sound/feel on clean and mid/crunch tones. Imoa, any metal hi gain tones don’t really give a real interpretation of any real amp in modelling world if that make sense? My axe through my traditional setup sounds better. I mentioned this before, fractal should come up with a fractal -amp -speaker solution to make this easier. Fractal still kicks ass and MOST realistic /convincing, but Still seeking “end result “ solution