First, welcome on PuristSPro to you!
Today we have the 5205R: it exists with an Opaline white or a black dial. I mention it as, except the Chronograph, it is a very close offer to the 5960R for instance.

The 5960R was gorgeous and very attractive, technically speaking so as aesthetically:

Now that the 5905P was released it is hard to say if they will add a black dial with RG soon (or ever). The 5905 is very different but the 5960 is a fantastic watch. I think it remains recent and you should not consider it as a "non actual" one.
However, I think you should really ask yourself what your really want,as the 5905P looks completly different (gold color, size, pushers, etc...) and you mention that you have a soft spot for RG.
Anyway, I don't think you would go wrong with any of them.
Keep us informed when you've made your choice

Cheers.