*MAJOR UPDATE*
So. Comixology have added a feature to let me download a back-up of the comics in either a .pdf or a .cbz file format. Turns out that the .cbz is a special comic compression format and can be extracted like any other .zip or .rar. What this means is that the task that used to take me several minutes now only takes me seconds and the end result is so much better. In light of this, I'm going back to the earlier comics and updating them to their full resolution so that you can enjoy them in all their glory.

I'll post another update down here when I've finished with them all.