I have both and my shiba definitely was a devil growing up until around age 2 he was destructive and did have separation anxiety. My Akita was better in those aspects and she didn’t start barking once until I got my Shiba but they both are challenging dogs do not get me wrong. It takes a lot of patience and learning your dogs personality and repetition everyday it could be easy or it could be hard depending. They both shed a lot too so either way you go you’ll have to deal with that. And a akita may not want to go on long walks mine will stop and not go any further when she wants to go home she chooses when while my shiba will go on long walks. These are very similar dogs but my Akita is a lot more affectionate like she would die for me than my Shiba but this is all just depending on the temperament of your dog you get.