One thing I've noticed as I've drifted over to some Android devices is that in tablets the cellular approach is much more restrictive than it is with iOS tablets. With iOS virtually all carriers are supported so you can buy the cellular versions in a store and not have to think about which carrier. But in the Android world, that is not true at all, or at least from the two 'brands' I looked at.
Nexus branded seem to be all GSM unlocked, or at least can be. But no Verizon unless I'm misunderstanding.
Samsung's all seem to be locked/sold to support a specific carrier. That alone would keep me from ever considering Samsung tablets. To be honest, my past history with Samsung support on a few other products usually means they aren't on the 'list' anyway.
These days I will only buy a phone or tablet that is totally unlocked and preferably cover all carriers. Since there isn't any carrier subsidy on phones for the most part, and never really was on tablets, I'm just not interested in their 'self interest'.