I've been told that ODIN backups are preferred to Nandroid ones, but I've only ever used the latter. What are the features that differ between them, and how is one better than another?
Also, if it is true that ODIN is better, and I want to use it, can I without a Samsung device? It seems to me that I won't be able to use it if I have an HTC, which is a bummer if it's really that good! In that case, is there another utility that is available for sans-Samsung Android users?