DVD-R Media in Powerbook Superdrive?

[Benn]

I'm wondering what cheaper DVD-R media people have successfully used in 
their powerbook's superdrive (particularly in the 17" Powerbook)?  I've 
got a project I wanna do that requires a lot of DVD-Rs, so buying in 
bulk is fine, but if I'm going to buy in bulk, I want to know it works 
first.  I've heard from people that some media won't work in certain 
drives, so I figured I would ask here first.

Thanks,
Benn