Regular DC motors tend to have nasty cogging between the poles unless the armature is skewed (Pittman Lo-Cog, Glentec...), but these types of motors are much more expensive than brushless when bought new and good luck finding them used in the voltage/wattage you want and even then you generally end up in the same (or greater!) costs than going with a fully developed BLDC solution that outperforms it in every quantifiable category