Before I begin giving my own opinion about this episode, I do want to say that this season (Master Quest) is probably the best original series season out of all five. Yeah, that's right, it even beats the Indigo League series. So much happened during this season, that most of my list of epic moments in Pokémon happened during this season. The theme rocks too.
Now, for this sub-part (Whirl Arc) the first episode wasn't that good of being interesting, but I did like some openings like Misty wanting a Corsola and the Lugia's shadow appearing - foreshadowing events that will happen later on in this arc. That is probably this episode its strongest point.