A 32 GB gives you 9 hours of recording.  The reason why I use one is that it makes it so much easier when trying to film over a couple of days.  I understand that the Gopro HD Hero only gives you a couple of hours on a full charge so why do you need 9 hours of recording.  The reason is simple, first off I have a couple extra batteries.  I don’t like the idea of the new Gopro Battery Bacpac, because you have to have the Gopro LCD Screen.  I will spend hours on the water and when I come in I don’t want to edit or pull video.  I also have to plug in camera to charge batteries for tomorrow and that’s about all I want to do along with eat and party!! When tomorrow hits, I’m fully charged and still lots of recording time and no messing around.  When I get to work on Monday I can play with hours of footage. (this is one of the benefits of working for yourself).  If your a Gopro user and have not tried the Gopro LCD Screen go get it.  If you are still considering a Gopro HD Hero camera, it’s an amazing little thing and you will love it.  Order it with the Gopro LCD Screen and at least one extra battery is my recommendation.  Take advantage of any Gopro coupons or available promos at Gopro Promo Codes.