The large Yuuki I'm not sure I like. The larger rim was causing cramping and I could feel it, it was not pleasant and I didn't leave it in long.
I like the MeLuna except...I have trouble getting it to open. Today I had to reinsert it 3 times before it would pop open. With the Lunette it opens every time with a good seal no matter which fold I use. I usually use a 7 fold. The MeLuna was a lot harder. I tried the 7 fold and it stayed pretty squished. I did a punchdown and it opened, but it took a lot of manipulation once it was in to get it to open.
Also, I'm not sure that I actually gained any capacity. The Lunette doesn't start to leak until it's REALLY full. Pretty much at the brim. The MeLuna is longer and I think my cervix dips into it more so it starts leaking a little under the holes. I think it's about the same as the Lunette.
Maybe I should just get a second Lunette! Anyone have suggestions for a better fold that may open more easily?