I definitely prefer Xscape over Michael. Eight remixes of never before released songs beats three fake songs (Cascio tracks), a remix of a previously released demo ("The Way You Love Me") , a glorified Akon song ("Hold My Hand") and a blatantly incomplete song ("Hollywood Tonight"). That just leaves four finished, authentic songs; I like "Another Day", "Best of Joy" and I'll be generous on "Much Too Soon", but MJ's cover of "Behind the Mask" was wholly unnecessary.
I really liked the remixes of "Love Never Felt So Good", "Loving You" and "Slave to the Rhythm" on Xscape, but I don't care for the ones of "A Place with No Name", "Blue Gangster", "Chicago", "Do You Know Where Your Children Are" or the title song; the original versions of those songs are better, yet for some stupid reason the Estate only released crappy demos of them in trash quality. All in all, I still greatly prefer Xscape over Michael because the Cascio tracks are a travesty that should have never made it on any MJ project under any circumstances.