Hi listers !

Hmmm, as everybody knows, PD is build for making really interesting audio stuff as video.
So I had a look at GEM and Framestein and I have to say that I'm quiet lost :
- Are GEM and Framestein utterly apart one from each other ? I mean is it possible to merge GEM objects with Framestein ones and conversely ?
- As for the rendering window : I noticed that GEM came with create/destroy objects and that Framestein came with its own rendering window : is it possible to have a unique window which displays both GEM and Framestein patches ?
- And in term of possibilities : eventually, which one of Framesteind and GEM is the most powerfull tool ? Are they both specialised in a certain area ?
These questions may appear to be stupid but I have to hear about your opinions... (the goal : creating a video clip to accompaign a track I've done recently, an interactive one to say...)
PS : about PDP, is it a customed-video oriented version of PD ? I think this one doesn't exist on XP)
Any help would be greatly appreciated.
Thanx for your support !