I have a preference for white metal generally so WG or platinum were preferred although I did have a RG variant on my long list at one point. Between WG and platinum for the older versions I was looking at the dial differences are relatively minor, the main one being in terms of grey colouring on the top of the barrel for the platinum variant vs silver on the white gold version. Ultimately a fairly priced WG version became available locally so the choice was easy. One bi-colour one showed up as well (rg with black ADLC side panels) but I had already committed to the WG one at that stage. Really no bad variants of this lovely piece!
Congrats Roger!! This is an amazing piece and the one GF that I am might get one soon simply for the option of rubber straps. Looks great on you! Wear in good health!