Ok, here it is, that critical question...
What was Sisko's best look?
The "it's in my contract", a full head of hair and clean shaven look of early on?
The "let's bend the rules a bit", full head of hair and neat goatee from late Season 3?
Or the "Hawk is back and you will learn to like it", shaved head and goatee?
Or even "Haven't you ever seen a Klingon before?" of early season 5? Threw it in, couldn't resist.
I think I know which will win, but as Donald Trump has painfully proved, surprises do happen.
Note: Not going to do a TNG one. Picard's look didn't change, and Riker with beard vs. Clean Shaven Riker would be like a bat'leth duel between Worf and a tribble.