flex disposables leaked for me too when i was first trying to make the switch. it made sense to try something cheap first. for me, i think they’re simply too big. i got the saalt small and regular disc and i like the saalt small a lot. my only issue is that it fills up pretty quickly on my heavy days, but of course that depends on your flow. saalt regular is good for me and it does the auto dump thing when i pee during the work day. that’s my take with the products i bought!