Ænima has some great songs but to me is pretty much ruined as an album thanks to all the filler.

I wouldn't consider anything on Lateralus filler save for the final track, which I deleted and do not listen to. It might as well not exist on the album for me.

I don't think 10,000 Days has a lot of filler, even if as far as I'm concerned Rosetta Stoned might as well be because of how much it sucks. I don't find silly music, or music about aliens enjoyable which is why I vehemently anathematize that song. 10,000 days has its moments but those moments do not compare to the highs of Lateralus or Ænima and the stuff dragging the album down is worse than even the most annoying filler on Ænima in my opinion.