I personally come from MMF2, and I've left it cause of its price. The software is already expensive (I talk about the Dev version), but if you want an exporter (iOS, Flash, and android/XNA/html5/etc. to come), you have to pay, again and again...
Finally, your product with all exporters will be about $500-600... it's crazy.
With Construct 2, in using javascript, I love the easiness to make plugins and in fact, the simpleness to have more and more new usefull options added to C2.