Though apparently you can put 90 minutes on them in EP/LP mode. You probably don't want to use that if you don't have to, though. http://en.wikipedia.org/wiki/DV
The 2nd device is a AVCHD recorder. Understand what you're getting into if you go that route. http://en.wikipedia.org/wiki/AVCHD
Good luck!
Cheers,
Scott.