1 pointlove freeloveoneteaspoon and sweet-dream! I feel that you can have both if you want. if a series stands out on its own then you can separate it. as an artist with series you would have those galleries, and for clients looking to hire you maybe have more commercial galleries that are easier for them to ingest to get a quick idea of what youre about. or have just one portfolio that is a best of all of your photos for that reason instead of portraiture, landscape, etc. killing it tho!