Atlantic Division:
First of all, DANG, I love those Alternate Florida Panthers jerseys. The Blue home jersey is just so rich to look at, and the white road jersey that plays off of the Florida state flag is fantastic. I also like bringing back the old logo for the Ottawa Senators (used to be my favorite logo in the league), but the Panthers jerseys edge them out.
Central Division:
I want to say Wild, but that red jersey with the vertical stripes ruins it for me. I just dislike that one, almost everything about it. I don't like red as the Wild's main color (yes, I know my avatar is me wearing a red Wild jersey - it was a different time), and I don't like vertical stripes except for in the rarest of circumstances. I do like the Blackhawks ones, but I think the Blues edge them out for me. They're simple, classic jerseys with a timeless look.
Metropolitan Division:
Going with the Capitals, and it's 100% because you have one of the jersey's following their blue and copper late 90s look.
Pacific Division:
I'm going with Arizona on this one. I loved the original Phoenix Coyotes jersey with it's weird design and logo. Heck, I own one of the jerseys, and it's the only non-Minnesota-based-team jersey I have ever owned! The nostalgia is also strong in those Mighty Ducks jerseys, but I'm going Yotes.