There are many diaper washing services that are truthful in their claims.  I have the greatest respect for all the diaper services that have managed to survive.  It is hard not to feel sad for them when their market share has dropped so suddenly and so dramatically.  Did you know that less than 4% of all babies in the U.S. use a diaper service?   The fact of the matter is that even when we can recognize some marginal benefits of a highly breathable diaper,  it is even more important to have a dry environment for the health of the skin.  Nothing comes close to the dryness that a good disposable diaper can give to the baby's skin. I dare the best cloth diaper in the world to challenge the re-wet and dryness of premium diapers. I would pay a reward of $100 if anybody can beat the best disposable diaper with a commercial cloth diaper (rewets after a 200 ml or a 300 ml urine insult). 

There are still a few disposable diapers in the market that claim to be safer because they are made without any SAP. Some of them even go so far as to try to claim (indirectly, of course) that SAP is not good for the baby's skin. In my opinion, this is an attempt to justify the lack of novelty in their own diapers -17 years ago all diapers were made without SAP! Wow, so much of novelty! A diaper without SAP!