I’ve only had time to watch one so far (The Return of Darth Maul) but it’s phenomenally well done. The quality is really high.
Glad you enjoyed it. That one took the most time and effort, but I am incredibly pleased with the results personally. It not only uses an official film cut as a basis (even taking a few of their transitions where usable), it is one of the best looking upscales of the lot since the HDR lighting throughout the entire arc just comes across looking incredible all around. You can’t even tell that the animation is already 7 years old.