Sorry for previous mistake.
I feel concerned because i have been using all of these softwares. It all started with Reaktor, which is clearly music-oriented (though some people are able to make video games on it !). I had a lot of fun and headaches. It was a good introduction to modular-environment. Great for synth / fx / buffer things. It can be used as a VST but has no video support. And i think making math in Reaktor is not very handy.
Now I can't use it anymore. Pd seems more 'austere' at first looking but also it shows the basics you need to know in order to go on. I think it brings to a better understanding of how things work, at least for me.
And it's cross-platform, free and quite stable. And people answer you quickly. And it's the sexiest :)
I personally REALLY got into it while having a specific thing to accomplish. At the beginning, learning it was difficult and blurry. It seems you can do A LOT indeed.
In my own opinion.