This entry relates to the question by bigwade in this thread.
I have used the demo version of APP for a couple of days now and I like what I have seen. The program is clearly written by professionals that know what is needed to make the panorama creation process as simple as possible but still allow the user to have full control of the process.
I have experience of using Pano Tools Assembler, Hugin and Photoshop to make panoramas. In most cases the finished panoramas need some manual trimming to make them perfect.
With APP complex images with lots of details near the edges of the source images do not always create perfectly aligned results. In spite of the blending algorithm doing a remarkably good work, some annoying glitches can sometimes be seen. These can be quite disturbing if they occur for instance in the middle of the horizon.
I usually correct this kind of problems by creating a layered psd file of the panorama. Using layer masks I then try to find a place where the match between the source images is as good as possible. APP allows creation of layered psd files but I find correcting the panorama using these a bit cumbersome.
The methods described in http://www.autopano.net/wiki/action/view/Photoshop_layer_edition
or using layer transparency and png file can of course be used but they are rather tedious.
In the layered APP images it is not very intuitive to see where exactly the seam between the source images is placed. The fine trimming of the panorama would be very much easier if the layers would contain masks corresponding to the seams defined by the blending algorithm. The exact location of the seam between adjacent images could then easily be moved by editing the mask of a layer.
The layered image (with all layers enabled) would also look much nicer with masks since the corners and edges of the layer images, usually darkened by vignetting, would not be visible.
I hope APP will consider this improvement in future versions.