Advice/suggestions for next purchase?

[stockjock1975]

Hello everyone here on TRF! I wanted to solicit everyones advice on what watch might be the next addition to my small and humble collection. As it stands right now, I have 3 pieces in my rotation, Patek Aquanaut Travel Time, Patek 5960P, and a Rolex Submariner. Although I couldn't be happier with these 3 watches, I want to start thinking about potentially a 4th watch to add to the collection at some point over the next 12 months.

I don't want to add a timepiece for the sake of just adding one. Instead, I am looking for a logical next step that will make make the collection more well-rounded. However, I'm not sure what that next purchase should be. I have been examining several scenarios in my mind and wanted to get your opinion as to which makes the most sense.

Scenario #1) Focus on adding another BRAND. While Patek and Rolex are a pleasure and privilege to own, there are many other brands that represent fine horology. Perhaps it makes sense to add a Lange, AP, Breguet, etc. to the collection?

Scenario #2) focus on a missing COMPLICATION. Although I have a GMT function, annual calendar, and a chronograph, perhaps I should consider a piece with a moon phase, perpetual calendar, etc.

Scenario #3) Focus on MATERIAL. Presently, my collection is limited to Stainless Steel and Platinum. Perhaps a piece in Rose gold would make for a nice addition?

Scenario #4). Focus on PRICE. Although the Sub is my least expensive piece, it is still a pricy piece to use for a beater. Maybe I should consider something at the lower end (i.e. $2k - $5k)

I could go on and on with various scenarios to consider for a next purchase, but I will stop here. Based on my current collection I would love to know your thoughts on what would make for a logical next addition to the collection.
Thanks in advance for your ideas!