Need advice on adding to collection..

[TestnDoc]

Hello guys and gals,

I am relatively new to this forum, and to Rolex, but have found this site very informative!
My current collection consists of:
- YM 40, 2 tone everrose with chocolate face
- SD43 with red lettering
- Batman

My AD has a 2 tone SkyDweller with white face. I'm sort of of intrigued by this watch, in that it has a month display, 72hr power reserve, and it is a little more dressy. My AD also has a date and no date sub, and a GMT 2 tone with blue face and blue bezel. The GMT has 48hr power reserve, which I assume is an older movement.

Any suggestions? Thanks!