After my issue with my Abena X-Plus Mediums splitting open in the back, I decided to take the advice to try the Large. I have to say... they are awesome so far. They really are huge and hold a lot more liquid, so I feel like I could stay in one for a LONG time. They definitely take up more space... as in, up to my belly button and up my lower back. I will probably continue wearing the Medium more often still, but this is a comfortable change of pace for right now.
If you don't mind the tallness and bulkiness, I highly recommend giving them a try. You can still pull the tapes tight enough for a secure fit. Have any of you tried both sizes out? What do you think?