For me the three essential factors for choosing sports equipment in my field (the points in classical dance) are :
Safety : First, the equipment must be safe because my body is my work tool and I want to avoid injuries.
Try before you buy : This means trying my points before buying them to test if it's high-quality and see if they suit me for dancing every day.
Durabillity : From my point of view, an important factor is also the durability of my points, because it's often expensive (for example the pair can go up to 180 euros) so I prefer that they last in time because it requires an investment .