Prefered CBT’s for MCSE and CCNA

As I finally need to suck it up and get my certifications ( I have most of the experience), what vender is prefered for MCSE and CCNA cbt’s? I don’t want an exam cram/flash card style cbt as I want to be able to pass these on to others.

What about the video cbt’s? What would be great is an audio cbt that I could listen to in the car.

Thanks