Hi laranna - we had 2 mcn ones but we swim everyday from about Oct - Apr. We haven't used dis with DD but did use them with DS and I can honestly say the MCN ones hold a lot more then the disp ones when it comes to the first 8mths or so and those runny poos OMgosh. Ari has soiled her swim nappies a couple of times and we just rinse them off and away we go again. We have only used the imse vimse ones so I can only vouch for them but they are great.