Hey guys i'm going to purchase my first omega and can't seem to decide on which Speedy pro to purchase. I like the 3573 as its more scratch resistant and it has a display case back. However, the milky lining around the dial and the error in the case back is drawing me away from it. I am aware that there has been various similar threads on watchuseek but i still can't seem to make a decision whether to go sapphire or not. What do you guys think? Any sapphire sandwich owners here?
Also, to all 3570 owners, how often do you guys polish your crystal? Is it really that prone to scratches?