Polyaniline doped with acrylamido-2-methyl-1-propanesulphonic (PANI-AMPSA) and camphorsulfonic (PANI-CSA) acids have been studied at different waveband EPR. Localized Curie-like and mobile Pauli-like spin charge carriers are stabilized in amorphous and crystalline regions of the samples. AC conductivity contributed from these centers was determined. A strong singlet-triplet interaction was observed in one of PANI-CSA sample. It was shown that, in contrast with PANI-AMPSA, PANI-CSA is a more ordered metal with higher rigidity and planarity of the chains and hence with higher both d.c. and a.c. conductivity.