Get the large one. I used to think the Grande is too long for my wrist. Try try few times in Starhill but still felt it's too long.
Then bought the largest model of the older RG Night/Day model and it looks bloody small. Ends up now in my wife's collection. And I now carry the reverso Grande Day/Night (SS rather than the RG, overblown budget) and it juz fits right. Been wearing it very regularly for work and it never look out of place in term of size.