I was planning on watching all of Branagh's ones soon.
Save "Love's Labour's Lost" for the very end. It is OK. But it isn't that good. At least I don't think so. If you want straight Shakespeare, this one isn't the choice because it was turned into a musical using popular music from the past (i.e. Cole Porter, Irving Berlin, et.c.). It just didn't do it for me.
But, having said that, I am a
huge Kenneth Branagh fan. And I would have the other 3 in my top 5. My
#1 favorite Shakespeare is definitely Branagh's version of "Hamlet". I think the rest of my list would be (in order)
Much Ado About Nothing (1993),
Julius Caesar (1953),
Henry V (1989) and
Richard II (2012) - we are including TV in this, too, right?

If not, I would replace "Richard II" with "Othello" (1995)
For performances, I think Kenneth Branagh as Hamlet is the best. But I
loved Ben Whishaw as King Richard.
Has anyone seen "Macbeth" with Michael Fassbender yet? I just watched it last weekend.