i finally decided to get a second cup, and chose the mooncup uk, based largely on reviews from this community. (i originally had a keeper mooncup, but the shifting around was driving me crazy.)
while it's too early for a test run or comparison reviews of the cups, i would like to note: the instructions that came with my mooncup uk are FAR superior to the ones i got with my keeper mooncup. mooncup uk comes with a booklet, with sections in almost every common european language, that includes tips on folding methods, cleaning methods, removal methods, removal-without-spilling-blood-all-over-y