I actually basically agree with the season ranking above though, except that I'd probably put 41 above 43 since the post-merge drama around the alliance falling apart was pretty juicy. (And Shan was a very compelling character. Sucks to learn the things she's said/done post-show.) Reddit mods do suck though.
42 really had something special going though so it's really impressive it was able to be pretty good even despite being in the pre-longer-episodes new era stretch. I probably put 46 and 45 above it by default but it's not a foregone conclusion.