The EMFO covers are a little heavier, which means they require more
storage space and are a bit of a handful when you're rolling them up.
But this seems to mean good durability too.
My Nimbus 3/25.5 set was their first for that span of N3. The wing
tip panel covers weren't cut right, but they were replaced as soon as
I provided the dimensions that EMFO needed. Great customer support.
The covers have not seen lots of use, and still look quite new.
Jim