Depends on your style. I would go for the Hulk myself. I am trying to track down a V6s 2836. I have had four of them including the V6s with a real ETA.
The movement depends on what you want. If you want to imitate the winding of a gen 3135 then go SA3135 but it may not be the most reliable movement in the world. Also hard to find parts, and it takes few gen parts so if it messes up you may have to replace the movement. If you want a solid rep go A2836.
AFAIK They are all the same in terms of build quality so it is up to your own personal choice really which model you got for. I have never had the OP though but they are really popular at the moment.
Advantage of the sub, if you do not like it it will sell very fast in M2M on the rep fora from my experience.