The Clean verions are very close and the DD movements they are supposed to no be using should take a gen balance and parts, so you could spend a small fortune trying to buy up some visual gen parts and have a watchmaker fit them to the movement, no point if its not display case in m opinion.
The cases are as close to gen as they can be and so are the dials, but it depends on who you are trying to fool! If its people in the street and a some watch nerds then maybe, a dealer well maybe visually but if they question anything they would be sure to open it up and then your tell appears unless you have essentially got all gen parts fitted to it that are visible in which case it will be mostly gen, but never worth outside of here or some Reddit post the value it holds in terms of parts.
1:1 would lend itself to being identical but just not made by RO what you really mean is 1:1 looks wise which some are very close.
The reality is no one is likely to question it unless you flash it about bragging about it or you do not fit the profile or someone who is likely to be wearing a £28K watch, its not just the car you drive as many are not fussed about posh cars but if lets say you still live your parents and work at a 7/11 then chances are even if you won it and it was gen it would still be questioned!
Clean are probably your best bet looks wise and BTF if you can still find them the movement you want is the DD version.
If you just like the watches and are not trying to pretend then getting so close to gen is less important and can save you money.
As with most of the precious metal or hard to get models with big price tags, even if it were gen people will still question it unless you fit the part. Depending on where you live to you also put your life at risk as the mugger in the street wont care and still target you.
Take a look around the site first though as your are a noob and you will pick up quite a lot by reading rather than just asking as it will have been discussed many time before!