I went for a thicker, clear cover last season (16 mil). It was on sale for less than the 12mil. I'll stick with the 12mil in the future, the thicker covers are really hard to handle, they don't lay on the pool as well and they weight a lot more. Hopefully, I'll get a lot of years out of this one.

BTW, the clear does look nice as the pool liner shows through. It looks more "natural" than the bright blue. But, I wouldn't make a buying decision based on that.