A possible bimodality in the radio loudness distribution of the AGN population, the so-called `radio-loud/radio-quiet dichotomy', is an often-debated, somewhat contentious, and ongoing topic of study. Black hole spin powering of relativistic jets has long been postulated as a possible origin of the dichotomy. In this talk, I will present a study of a previously-published sample of 199 AGN from five different populations, in particular focusing on the radio loudness properties as a function of Eddington ratio. Replacing total radio luminosities with mass-corrected, core radio luminosities results in a much weaker bimodality, and I will discuss whether this result is consistent with black hole spin models. I will also discuss the advantages and disadvantages of using core- or lobe-dominated radio luminosity as a measure of instantaneous jet power.