Like Warren, I tend to smoke aromatics in cobs, for the simple reason I only smoke a bowl or two a week of aros.

I don't really dedicate to blend types. I will smoke anything in about anything for the most part. One thing i am thinking of doing though is dedicating a pipe to Lakeland tobaccos if I continue to keep them on hand. I smoked a Virginia the other day a couple days after smoking some Bob's Chocolate Flake and definitely tasted the Lakeland essence.
I don't notice much of a ghost with latakia (unless I smoke a lot in a row and then switch to a mild tobacco) so I don't mind there.

I tend to like latakia blends in wide bowls. Don't know why, it just seems to taste better that way for me.