MeLuna question

Can anyone with relevant experience tell me about the difference between the MeLuna regular and soft cups?
Specifically about whether the L/XL size soft cup would be ok to use at night or if it's more likely to leak than the regular one.
I'm looking to get the XL MeLuna to use mostly at night since my current smaller cup is really not up to it during my heavy days, but I need to know if it would be better to get the regular or soft version. I'd prefer the soft one for easier insertion/removal, but not if it's likely to get squished up and leak while I'm sleeping.

Thanks in advance :)


P.S. And if anyone would be kind enough to explain their return policy (http://meluna.eu/widerruf/) that would be awesome, as I don't know any German and Google translate isn't making any sense...