Good choices mate.....interestingly...I have all three of them (HBB RG/Ceramic, AP ROO Rubberclad with Steel bracelet, UN SS & RG both....black face)
I am planning on getting the RG AP ROO....but waiting for black dial version.
I would say....from a visual perspective....all three of them are fairly close to the gens.
All of them have their quircks as well....
...HBB has a sunken datewheel/Rotor has stickers on it (depending on what version you buy)....
...AP ROO....no AR on cyclop.....I got the rubber bezel replaced and it's been holding up pretty good since then. But if you go for all steel...you can't go wrong with it.
...UN (I have both SS and RG black)....very nice feel....rotor is pretty good too....however, the rotor and caseback markings on the RG are completely off.....basically they are the same as the SS version...just RG plated.
Of the three....AP wears the biggest....followed by HBB and then the UN.
Hope this helps.
Cheers