Blues-Blackhawks was the best series in the first round. I'm so happy we finally beat the Blackhawks and got out of the first round. Should be a good series against the Stars. You've got arguably the best offense in the league up against arguably the best defense in the league. The biggest factor I think is how the Blues' offense does against the Stars' defense. Their defense isn't that great, and pretty bad if you compare them to the Hawks' defense. The Hawks also had better goaltending.
For those reasons I've got the Blues in 6, maybe even 5 if the Stars' defense and goaltending really stink it up. If Seguin is back early, maybe it goes 7 games, and anything can happen then.
For the other series, I've got the Sharks (likely in 5-6 games), the Penguins (probably 7 games), and the Islanders (6-7 games, 6 if they take both in Tampa).