I was using pampers before on my 1 year old son too and he started developing a rash from the chemicals in the pampers diapers.
The pampers diapers were good diapers other than him developing a rash from them.
When I switched him to honest company diapers he didn't get the rash anymore and the honest company diapers seem to be better at absorbing the urine and doesn't leak as much as the pampers used too.
If you can afford the extra money then I'd say buy honest company diapers for your baby.
Actually they're not that much more expensive than pampers baby diapers.