i agree about the 2846, i have put a gen rolex 1030 in my 6538 yuki case , i did that for me its feel good and i like the slower beat, i will never be able to have a gen 6538 and to me this is the nearest thing its as close as i can possible have
thats why i tried to get all the best available parts including yuki dial,hands,bezel insert.
my 5512 watch has an old 1970 2783 eta and i like that too with a slower beat plus its very close to the 2784 tudor sub movement all my other reps have the 2836-2 movement and thats great i think if you build a watch from the best rep parts and you are going to keep it for your self then why not a gen movement it cost me 2500usd for the 6538 to finish i wouldent spend that much again its a special watch to me and i have turned down a 4500usd offer for it from a guy who usually only buys gens.