Business dress watch: RDM, MUTM

I am finally getting closer to acquiring my first JLC and have narrowed down between RDM in Rose gold and MUT-moon.
(1)
Reading about the RDM, I find some interesting notes from the time of release about the blue hands “painted” as opposed to being heat treated. Is that the case or was that a wrong assumption early on? – I seem to get mixed results reading up online.
(2)
I have the RDM, MUT-Moon & Perpetual calendar in my mind both RG & SS versions and I cannot decide on one [before deciding I will visit a boutique]. The PC costs nearly double, so I would ease that..
between RDM & MUT-moonphase, Any thoughts? Appreciate Photo links (wrist shots). Of the two I assume MUT-moonphase is more popular.

[I am also drawn to RG versions of ALS Saxonia & IWC Portofino]

Thanks,
-Michael.