What were the best X-runs of the past 20 years (besides Morrison and Whedon)?

Mike Carey's stuff. Kyle and Yost's work. Remender (even if though he's a terrible person) did good work on X-Force.

In general, don't read any of the main title stuff from the 2010s. It was the absolute nadir of X-Men comics. You had Gillen and Aaron ruining everything, Bendis introducing time-displaced O5 because he didn't want to read more than the first few issues of the comics for research. That's not even getting into how virtually every major X-Men character was incredibly evil/genocidal at one point or anything. Schism and AvX are some of the dumbest comics ever written at a time when dumb comics were at their most common.

Just horrible, horrible stuff.

/r/xmen Thread