Alright, i let it at NONE anyway, sounds better..haha but it was really interesting to know because i had saw this at wiki fractal:
The "None" setting still involves mic modeling. The stock "FAS" (Fractal) and "Mix" cabs were captured using a neutral Earthworks mic, placed close to the speaker. The same applies to the stock Red Wirez cabs. So the sound is still a close-mic'd tone. Still, selecting "none" with stock cabs is a good way to remove specific tonal influences from a mic from the tone.
But probably it is meant onlyfor the stock cabs... maybe. Thats why i ask,
thanks for the answers!!!