Ok so I have had a couple and still own one.
Funny how they are seen here, as you see more footballers wearing a Rolex sub and the design is basically the same as the Royal Oak......
Anyway, 42mm version is the biggest I would go for me. The bracelet is great (finish, fit for me), but whether it is that or the strap it needs to fit well given the watch head weight. The deployment is never comfortable so with a strap always go with a tang buckle.
The bezel us a bit of a scratch magnet, but can be refinished if there is nothing too bad. Servicing is not cheap though.
Obviously not slim so fitting under a shirt cuff is not the easiest and they are not the lightest watch around. So for a daily wearer may not be the best (though it was mine for a couple of years).
However if you have a few other watches then I think they are a really great addition with the ROO RGRC still being the ultimate sports watch for me.