I like 3 the best, of course I LOVE purple, but if I was just looking at it without loving purple I would say I liked 1 best.
It is your quilt, so use what you like the best. When I am not sure, I make up the blocks, and put them across the room, and live with them all day. Then take away the one I like the least. If that doesn't work, I take pictures of the blocks, and choose from them. Most of the time putting the blocks across the room, and looking at them all day works for me. Great job, and keep up the good work.