I think you already know the answer to this.
The 116500 is the better watch and is a much better daily wearer.
The 16520 is the better investment.
I have a 16520 and will pass it onto my son and he can do what he likes with it. On that basis I will hold onto it because it will probably sell for more should he decide to sell it on.
If I wanted something to wear every day, the 116500 would win hands down.
You chose what suits you best.