As a huge fan since the very beginning (of Steve Perry's tenure anyway - most of the earlier stuff was a little too obscure for my liking), I could list 25 faves and still leave out some great songs. However, as tough as it is, I have narrowed it down to two:

Feeling That Way / Anytime - you gotta love the vocal exchange between Perry and Gregg Rollie

Stone in Love - Schon lets loose from beginning to end of this track

As much as I look forward to this new "Arrival" and as much as I like the new Steve, I will never truly be happy unless / until I get a chance to see Perry, Schon, Cain, Smith, Vallory and Rollie together one time on stage. That would be pure rock 'n roll heaven.