Oh boy - the difference. Usually for the first 48 hours or so my flow is heavy enough that I get through super-plus tampons every couple of hours - which generally means having to get up at least once in the night. Not any more. The cup was full this morning when I emptied it but not overflowing and no leaks.
I've put all my disposable products in a bag pending working out what to do with them. I think I may be a convert. My first cycle with the Mooncup was at a weekend convention, even then no leaks, no problems, no issues.
This community was definitely instrumental in my decision finally to give the things a go. Thank you.