Shiren 5 - where to play?

Apologies for the odd question, but I need your advice. I own Shiren 5 on the Vita, Switch and on iOS. I have played a bit of the game but haven't really settled on a platform to go all the way.

Any recommendation on what system(s) to play it on or avoid? I'm tempted to play it on the Vita as it would be kind of a "Shiren-exclusive" device at this stage, but unsure if the Switch of iOS releases (5 plus) have more content, so I thought I'd ask.

Thanks!