If the snow is fresh, it will not have consolidated to corn, and sun-affected snow will just be heavy. If the snow has gone through several melt-freeze cycles, timing the corn is important, and moving from E to SE to S slopes as the day progresses is what you should be doing.Oh no, I wanted all the details and advice! Many thanks. I think I've skied corn before, but based on your description I think I've timed it wrong because my experience is that it's either choppy (too frozen) or slushy (too warm). This will probably be my best chance to learn about finding that sweet spot. But if I'm understanding you correctly, that will be after getting the fresh stuff on north-facing slopes first!!
North facing slopes are less sun affected, and will generally have better snow (other than corn), but grooming, pitch (flat north slopes get quite a bit of sun), wind shading and other minor variations will have a substantial effect.