Hey Bill, good question. I travel with a 13 inch Macbook Air. If I have time and feel like it at the end each the day I'll copy my files to its hard drive. I don't erase the SD cards so I end up with two copies as a good backup until I get home and copy everything to my big drives. I don't use high capacity SD cards, only 8GB cards ( I carry a handfull as they are cheap) for this reason: If one of the cards gets corrupted, damaged,or lost then I've only lost a small bit of data. If I used a big card and filled it up, when the inevitable happens (corrupted or damaged or lost), and it will sooner or later, I've don't loose a ton of data. I cringe when I read about people putting their whole trip on one 64 or 128 GB card without doing a backup. Another thing about file size....unless you really want to you don't have to set the GoPro to record anything more than 1080p @ 30 fps. YMMV but in the end I'm not trying to impress anyone with super high definition 4 or 8k high fideltiy stuff. I just want to remember my trip.... Thanks for watching. If you have any questions you'd like to talk about, PM me and I'll give you my phone, Cheers, Tim. Oh one more thing....I may be coming across OK on my way to Alaska in May...are you on the Tent Space Thread? Love to meet.