It's the FA Cup so anything can happen, that's the magic of it. A few years ago Exeter drew 0-0 with United at Old Trafford, each year there's giant-killing going on. Don't forget Everton held their own over 90 minutes against a fairly good United side.
I would LOVE to see Roman's millions yet again fail to pick up another trophy so I'm also going for an Everton win.
That way we can avenge our semi-final defeat when the Charity Shield comes around