[cypher]

I don't know those brands either, I wouldn't risk using the one with baking soda in though even if your ham seems fine now.
I've never used pelleted paper substrate but I do wonder if it would hold burrows or if they would just collapse? Hams do generally like to burrow & dig down under the substrate, if you can get the kaytee clean & cosy I would go with that, if you just spot clean & don't do any unnecessary complete cage cleans once you've set up a cage you don't need a huge amount of substrate really so it may not work out too expensive in the long run.