I don't really care honestly. They both have pluses/minuses. General thoughts: Demko is injured, but maybe coming back for round 2 according to recent rumors. Travel would be better for Vancouver. Saros is a great equalizer. We have a very good recent history with Nashville. We would have home ice vs Nashville. I think our style might match better against Vancouver, as they aren't as "built for the playoffs" as Nashville is. Not sure there is much difference in defending between the teams.
I guess if I had to choose, it would be Nashville just for the home ice advantage. But its a toss-up to me really. Whomever we end up with, I would like their series to go to 7 games to increase the rest our banged up players are getting (Kane, Henrique, McDavid and I'm sure many others that we haven't heard about).