I haven't tried myself for TT or Soarin because, just like with paper FPs, we ride those things in the morning when we don't need FPs. But, there was just a post a few days ago (I think on another thread) in which someone who was complaining about FP+ said that he could get a FP for either TT or Soarin in the morning, but he was upset becuase he couldn't get both.
As for PP, during one of our recent visits, we were looking for FPs at MK around 2 PM and PP was available, but the return time wasn't good for us so we took Space Mountain instead. So, I have no idea how much availablity there is, but it is more frequent than NEVER EVER.
On my last trip, which was Nov 14-21 (not a busy time), I looked on 4 separate mornings to see what Epcot and Magic had first thing in the morning. Epcot never had Soarin or TT and Magic never had PP. So I'm not sure what to tell you.