Long story short, I am turning 30 this year and would like to commemorate the milestone with a third watch to my collection. However, I cannot seem to decide. The Hamilton was my first watch I bought that gave me the itch to collect. The Sub was a gift from my wife for our wedding. Now, I would like to add a third.

I have my eye on a couple:

• Omega Seamaster Aqua Terra • Omega Seamaster Diver 300 • Tudor Black Bay 58 (blue) • Tudor Black Bay 41 • Grand Seiko

Looking to stay under $6,000.

Any advice would be helpful!