All are great but I think I like 4 the best. It makes the star stand out a bit more, I think.

#2 Love the way the colors all pop

I like pic #4 it makes a pretty cross in the center

I think all of the blocks look good but if I had to choose, I would choose number 5. If you are not using any sashing, this will give you an secondary design of an Irish chain. Love the colors. Whichever you choose, you will have a beautiful quilt.
Reta

for me it's #2, hands down.

Number 4

I love # 2..by pairing the purple with the lavendar square..there is an awesome dimensional quality..makes those stars sit up and take notice!

Yeah!! What she said. LOL

#1

#4 looks good to me