I was thinking of an iPad over an iPhone... I like that they have a stylo pen for drawing. I have an XPEN drawing tablet but I am leashed to the computer. I would like to be portable. The newer ones have the truDepth cameras which work, but for the full body mocap gear, I can use the iPhone with it and get full animation at once...
I cannot do that with the iPad.
I think you really only have 3 choices with tablets... the Apple OS, Android OS, or Windows OS with their surface.
Choose your devil basically.
If it's price that is most important.... find one that does what you want for the price you are willing to pay. Read ALL the reviews, look at photos then roll the dice.
Just make sure you know the return policy in case it is not what you thought it would be and need to return it.

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Help, HELP!.... Jane, Stop This Crazy Thing!!!!!!
Stop renting software!

Say NO to Rentware!
Take a Bite - Applebite Media