Before I say anything, they all would look fine. The blocks and your color choice are perfect!! Big question.... do you have a favorite?
For me - I like #4 the best and here is my reasoning The 9 patch border in #1, for me, is blah. In #2 my eye wants to look away from those gorgeous large blocks in the center to look at the border blocks, #3 - imho looks busy, #4 I like because I like that the blocks the blocks that draw my attention are all in the center and the subtle nine patch around the edges finishes up the quilt nicely and does not compete with the center.