I just earned enough gold on tapjoy to put me at an even 200 I'm thinking about spending 4 bucks to get 50 gold bars and get a Composite Factory.
For those of you who already have it, is it worth getting it? And if it is, should I upgrade? I seriously want this building for some reason I have read mixed reviews in different threads. I'd like for experienced players who already have it to pitch in and throw some advice my way.