X40 upgrade to L60 or x60 ultra?

Is there anyone who has upgraded from the x40 ultra to the new model of the l60 or x60? My x40 just doesn’t seem to get things clean any more. I can put dirt in front of it and it won’t even pick it up! I’ve always replaced all brushes, cleaned/changed filters etc. Curious if anyone has upgraded and seen a big difference in quality? Also what is the main difference between the L and X series?

We have the  X60 ultra. We got it because of the great reviews about it picking up pet fur. We have had it about 6 months and now it does not pick up all the cat fur nor does it mop as well. Does not vacuum well at all. Even on high suction. We are looking at other options. Wouldn’t recommend this one.  Definitely not worth the money.

We are having the exact same issue.  It just stopped working!