Mine back up to Copy or Box. I got Copy when they were offering extra 5GB additions for every referral. I've got 65 GB with them. I signed up for Box when they were offering 50GB lifetime storage. I've also got 58GB on Dropbox and unlimited on Amazon Cloud (Prime member) so I've got plenty of cloud storage if I run out of phone/card storage, external hd storage on the desktop, and flash drive storageFull size. Always. I have plenty of memory, and I can always easily scale a photo smaller for sharing, saving, whatevs.
I have all my photos uploading automatically to G+ over WiFi at full quality, so every photo I take is available at its original quality within a couple of minutes of connecting to WiFi.