The prevalence of measuring capacity to the holes has me wondering about this. I use and love the Femmecup and LadyCup (my alternates to the Sckoon) and their low hole placement apparently gets sealed by my vaginal wall. They can each fill to the top without leaking! So, for me, the capacity to the rim is actually a realistic measurement with these two.
Anyone else experience "to the rim" capacity with your cup?