I like the intuitive way the software presents its resources, in particular, the graphics resources, on the left sidebar. When I think of the wireframe, sometimes, instead of duplicate screens, I create two or three screens and I copy from one to another some features that are repeated. The fact of paste in the same place from one screen to another is a positive point (since the "shift+ctrl+V function does not work). The outline panel give a sense of the amount of elements on the screen, it is also nice. The use of the program itself is also quite intuitive.

The event building process is great. It took a while to understand, but after getting my head around it, it is awesome! It doesn't take a ton of mental gymnastics to figure out what you need to do, and that's fantastic. I am building much better prototypes in a smaller amount of time.

Easy to learn tool for making low to mid fi prototypes. Useful for importing comps and linking them with hotspots, works well accross platforms/devices. Easy to incorporate text boxes, drop downs, etc that accept dynamic user input in testing. Also the built-in widget libraries are nice.