I have both and it's hard to say. They are very similar. I do prefer Meets from the M!X in a way, but there are also the bugs (though none of them have occured to me so far). Meets also has a MyMeets app and even the normal Bandai app so you aren't "locked out of" Japanese-only content, unlike with M!X. But IMO there are better colour versions. If I had to choose I'd go with Meets, for the twins, pets, apps, etc, but be aware of the bugs.