A lengthy conversation... Well from what I can gather I think it may be a more interesting conversation with Edward Cullen even though I do not particularly like him as a character. Although he would know what I'm thinking so it would be good as I am very lazy and would not actually have to talk.
I like Harry Potter as a character but I don't think he would be very interesting to talk to for a long period of time.
I would in fact like to have a lengthy conversation with lets say Lord Henry Wotton from the picture of Dorian Gray as he was pretty interesting. Or maybe Alex from A clockwork orange, who is also a very interesting character
Lengthy Coversation? hmmm...Harry Potter.
His life story is way more exciting. I love Edward but he didn't really do anything before Bella came around and even if I did get to talk to him, he'd probably have Bella attached at the hip.
I'd rather talk to Ron though. Or Fred and/or George. I would have loved to marry into the Weasley family... *sigh* (as long as it wasn't Percy. Percy was a Jerk.)