If you're talking about the rose gold 116655 YM, I don't see where the stainless steel would make any difference since it's gold plated. Of course I've never really cared about paying the upcharge for 904L anyway. I own a gen 16610 and a gen 16800 and I promise you can't tell the difference between the two types of ss side by side. As for movements, I'd go with the 2824. If you're really up for a challenge, you could do the SH3135, but then you'll be spending another $400-500 bringing it up to snuff. No one will ever see the movement anyway unless they open the caseback and who cares- we all know it's a rep.