i have another dilemna with my gen PO. i have an opportunity to trade it for explorer II U series. He is asking me to add $550. No box or papers. Here are the down falls. It has a scratch on the crystal. He said it's really faint. I can see it clearly on one of the pics below. Especially on the first photo. The pics looks light they are gen and he has good references on WUS. Here is my rolex collection. A wm9 submariner lv, gen gmt iic, and a rep gmt iic with superlume and ar'ed cyclops. So now if i get the explorer ii, would it be redundant? The other good part is that he had a $400 dollar services back in March 2011. What do you guys think? good deal or not?