If both gyms have coaches who have competed at the professional level, then they both have more than enough technical knowledge and expertise to guide you for a long, long time.
If one coach or set of coaches has more of a winning competition record, that doesn't necessarily mean they will be better instructors or have more technical knowledge. Very often, the difference between a top 10 competitor and a top 100 competitor has more to do with athletic attributes, natural talent, drive to win, or sometimes just luck and timing than it does to do with technical expertise.
What you're looking for in a coach is the ability to communicate knowledge and guide you in acquiring skills and attributes. That sort of coaching is a different skill from competition ability. There are plenty of top athletes who are mediocre coaches and plenty of top coaches who are mediocre athletes.
The age is mostly a non-factor. You can find great coaches in their 30s and in their 50s.
Just visit both gyms and see which one has the coaches who connect with you the best.
If one coach or set of coaches has more of a winning competition record, that doesn't necessarily mean they will be better instructors or have more technical knowledge. Very often, the difference between a top 10 competitor and a top 100 competitor has more to do with athletic attributes, natural talent, drive to win, or sometimes just luck and timing than it does to do with technical expertise.
What you're looking for in a coach is the ability to communicate knowledge and guide you in acquiring skills and attributes. That sort of coaching is a different skill from competition ability. There are plenty of top athletes who are mediocre coaches and plenty of top coaches who are mediocre athletes.
The age is mostly a non-factor. You can find great coaches in their 30s and in their 50s.
Just visit both gyms and see which one has the coaches who connect with you the best.