I think it depends on your overall style. The Panthere is the most striking on your wrist and would suit you if your sartorial style is more put-together and elegant, while the TF is more casual/understated and would go well with athleisure or minimalist/androgynous outfits. I personally don't like the Tank Solo/Must. I'm in my early 30s and have the SS TF but can see myself upgrading to the Panthere (YG and/or with diamonds) in my 40s.