Just thought of a twist the the question, although I have worn nappies 24/7 for 13 years I rarely wear the same make or model of nappy for two consecutive changes. I use a variety of different brands for different situations depending on various factors. For example I wear size medium during the day and large at night, a high absorbency nappy for the morning when I tend to wee more and then a lesser absorbent one for my second change of the day. With the main brands being Tena, Molicare, Comficare and iDslip.
A few month back I decided to see how long I could go with the same type of nappy, I choose the Molicare Super Plus but stuck to medium for day and large for night. I lasted a whole week before wanting to get back into one of my other favourites, the Tena Slip Maxi.
I fancy at some time going a whole week again with each of my different nappies, however will need to take a week off work to stay at home should I wish to do it with the Comficare, I don't wear them out the house!