I had read all these years ago.  I recently found Wings in the Night Part 1 for a real deal and decided to download to my kindle and revisit one of my favorite series from long ago.  I got caught up again.  I then immediately upon finishing part 1 downloaded Wings in the Night Part 2 and read all of them.  I am now looking on the Wings in the Night Web Site and checking for Rhiannon's Chronicles and info on the new books coming out.  This series does not disappoint.  It matters not if you are revisiting it or if you are a first timer.  It will set the scene for the new books and/or give you a great series for your immediate enjoyment.  I highly recommend.