I guess I just really got used to McKellen's take on Magneto that to me it's the ONLY Magneto.
I can see that. I've always thought of McKellen's Magneto as very civilised as compared to the way the character had been portrayed in the ten years or so prior to X-Men
; ditto Jackman's Wolverine. Fassbender's rendition is more direct and therefore maybe a little truer to the source material.