Quoted from Beez:So I used to hear about Ball Stuck issues with the Avengers pins - did those get fixed with the last update (whenever that was). I've played this game a few times and really enjoy it just don't know if I will ever own one unless I start to hear better things about this game and understand that the "issues" can be worked out.
If you have played the game and enjoy it then get one. You shouldn't need others to tell you it's OK to buy one as their enjoyment wont equal your level of enjoyment.
That's the fun of this hobby is that everyone doesn't like the same things. I've even come to find out that I like things that most others don't.
All issues can be worked out. Go get one and have fun with it.