Ortho or implants

As a General dentist, in 2025, I want to specialize because I am interested into getting into a specialization. I've narrowed it down between orthodontics and dental implants. Would you consider doing orthodontics or implants as a career ? Apart from the fact that one should chose the career that he is the most passionnate about of course, what would you recommand based on your personnal experiences / knowledge? -in terms of difficulty to access the career -in terms of rentability (I have seen a lot of ortho cabs with many chairs, is it necessary to get a return on investment ?)

Thanks you for your advices.