Cap Presenter Machine specification should start with the real closure.
A cap presenter machine can support semi-automatic capping, automated pick-and-place or an inline capper that needs a controlled supply. The design should be based on how the cap is picked, gripped, placed or transferred into the chute.
For a better buying decision, the useful comparison is not only hopper size or headline speed. It is how the feeder behaves with your closure, how the capper receives the cap and how easy the line is to run after changeover.
The safest specification route is to start with real closures, target output, line photos and the exact point where the cap must be presented. That avoids choosing a feeder on a generic speed figure that does not match the cap or capper.