I also love the 5135. I don't care if it is not that popular. Even better. Don't want to have a watch which everybody has.... I thought of buying the 5135 (in white gold with white dial), but now I get second thoughts because I would be interested how a successor model would look like... Frank.
I got mine as a wedding gift from my wife. And I love the solid back because I have it engraved with a personal message from my wife. Pictures don't do this watch any justice, you have to see in in real. Simple, elegant, for me a great representation of the Patek brand. Cheers, Frank.