NoteLedge is at half price today (0.89€, which would be $0.99). Of course I couldn't resist buying it even though I knew perfectly well I won't use it. It seems nice enough, I like the interface on the whole, but the palm rest sucks. Also, it crashed once already after playing with it for a few minutes. You can insert a photo but apparently you can't control it's size. There is something called the Navigator which they make much of, but I am a bit underwhelmed at first sight.
It would seem to be in the same ball park as Notability: an app that can be useful if you want to mix sketches, typed notes and photos (if you don't mind the small size of the photos). At first glance it would seem to be less mature than Notability, but after all I have only played with it for a few minutes.
For handwriting only though, it certainly can't replace Noteshelf or Bamboo.