Thanks for your input. Your answer addresses the final output of my question but I was really wondering if professional modelers whould prefer either a) a model where the modeler choose to combine various meshes, some meshes having higher face density with a main mesh which has a lower face density. b) a model where the modeler choose to have a single, continous mesh where a higher density feature is merged with the overall main mesh thus impacting the main mesh by raising its face density in order to fit the higher density feature. Thanks