I'm still going with the classic I think, but I'm trying to find out more about people's experience with the lagging UI.
As for colors, if you're a female or gay male, I think the blue is pretty tight looking. If not, I think the pastels are a little too feminine (at least for me). I don't mean to genderize the colors, that's just my personal taste. And since I have always felt that the silver is timeless, I would go with that. For some reason, I have never really liked the black aluminum iPods. But, that again is personal taste. You might want to look at the Product (RED) as well... that thing is smoking. Plus they give like $2 of the price to charity.
Best to see them in person.
Sincerely,
Ado