Went to try yesterday.
Solid feel, pretty lightweight but not to the extent of being flimsy. Keys feels like it's not graded.. or if it is, very lightly graded. Similar to P85 key action. the MM8 shares the same chassis as the kx8 but the key action is much more solid in that one.. like the higher end CP33 or P120.
It goes for $995. maybe should wait for sale.