WE are using reflector for presentations, etc. It's perfect! Also the bet tool for creating 'real' screenshots from FMGo apps.
THe only problems are overloaded WIFI networks at conferences (-:
Fan of Reflector myself.
For those on Yosemite who want a free, but less feature rich, way of doing this can do so using QuickTime. We have a knowledge base article that going into more detail.
By the way, FileMaker's website notes that FileMaker is owned by Apple. What about this forum, there's no note above...
That's good for one device but lacks the nice iPhone or iPad like frame...
And, the above screen snap was taken using Snaggit 12. I can also record a video and in that video have the devices appear and dissappear (like magic) and holding one in each hand while recording I can rotate them and they rotate on screen in the video.
So, I guess the $15 is worth it... Especially when I can show how my app works exactly the same (within reason) on Mac, Windows, iPad and iPhone in one quick video.
Note that the video will run better in QuickTime for Windows than in the native Window software for video.
...and that no cable connection is required as AirPlay is used.
Markus correctly mention that overloaded conference-wifi setups can be a problem with Reflector (and any other network usage).
When doing presentations we are therefore setting up mini networks with a router for the Mac and the iPad/iPhones. You do not need a standalone router ... you can just use the iPad or iPhone and their build in wifi routers.