What is a really good, but relatively cheap flat iron (hair straightner)?

Just had a Chi, that is now fried ( I've had it for years!) I'm sorry but I don't feel like paying a million dollars for a "professional" hair straightner. On the other hand, I don't really want a Wal-Mart straightner either ;). My budget is flexible: preferably under $90, but again, I'm flexible with that. i really appreciate your responses guys! <3