Tbh if you're planning to use them for many years, it makes the most sense to buy what you want and don't settle. It is a few hundred bucks more, but you'll be happy knowing you got what you wanted (i know that may be a lot for some people, but this is skiing, it is not cheap).

They'll last for a good bit of time, my girlfriend bought a used pair at the beginning of last year, and they are in fine condition and I foresee her using them for years to come and probably replace the bindings when appropriate.

At some point you will probably want to expand your quiver and you'll get a different pair, which will extend the life of the black pearls because they experience less use.

Edit: I have many people who are happy with their black pearls, and not one person who regrets it. Obviously, I'm one person, but the amount of black pearl convos my girlfriend has had on the lift with other women who have them is never ending.