Speaker for the Dead

Starts off interesting but doesn't hold up.

The Piggy plotline feels poorly thought out and characters actions don't seem logical under scrutiny.

Ender is more obnoxious than the first book, bordering on insufferable as he Mary Sue's his way through every situation with every other character fawning over him.

The main focus ends up becoming all the relationships between the characters, which is unfortunate considering Orson doesn't seem to be very good at writing believable characters or dialogue.

If you really enjoyed the first book I'd say it's worth a try.