What size diaper

[dp66]

This is a very strange question, but I'm trying to decide what would be the best size dry 24/7 diaper to order. I received a couple of samples' of both small and medium from XPMedical. The small do fit, but a little tight. The mediums also fit, but definitely on the larger end. I have a 30" waist, and 35 inch hip. I'm sort of in between sizes. I'm a little concerned about leakage. If too small will they leak? If too large will they leak? If anyone wears these diapers a little advice would be appreciated. Thanks.
Dennis

[realworldic]

a diaper being too small or too big can leak on you, that being said it is almost always better to go up a size than down. (Almost always) a diaper too tight will get uncomfortable, pinch and rub your skin raw. If its to loose than you may leak. were do the tapes land when the diaper is wrapped around your waist? If the tapes land to the side of your hips I say that is too small. The more the side wings wrap around to the front the better coverage you will have especially at nighttime.