Originally Posted by
Sjondorn
J looks similar to BEST (not sure where the real difference is between "full" and "lightweight"), the seats look shinier on MU.
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All Cirrus seats are a bit different. By light version, I mean that BEST seats only have two movable parts, not three. There is no support cushion moving up for your calves. Short people can find it inconvenient in seating position. I am tall and can reach for the footrest, but prefer to have calf support.
As I sleep on the side with my knees up (back pain). I like CX or AF because there is a "hole" on one side (where the side table is) where I can put my knees. MU does not have it.