Not enough info on any of the systems...but Playstation will likely remain the brand of choice, which makes for the most developer support, hardware features, etc.
PSP could be so much...if that thing plays movies, I'll buy one in a minute. I'd keep it next to my sleeping quarters and whenever I wake up or can't sleep I'll plug in the headphones and enjoy a good movie
PS3 should be awesome too...who knows, though.