I also like the NovaMax Plus, which I use for checking for ketones. I tried using it as a backup for blood glucose and while it's easy to use, the numbers on human meters are way, way off from the AlphaTrak2, so cross-checking the numbers to try make sure they my AlphaTrak2 was correct didn't really work. If that's what you mean by backup, an alternative is checking your AlphaTrak2 against your vet's. Doing that let me confirm that my AlphaTrak2 is working and my cat is just peculiar. (I know there's control solution made for this purpose, but the range of results is 100 - 185, which was too big of a spread for me to be comfortable that it validated anything.)