I mean, the easy answer is probably the most obvious one: my favorite video is the most recent one. Doesn't really matter when you ask the question, that is almost always the case.

Getting a bit more nuanced, while I do have a deep fondness for To Breed And Bond, and am supremely proud of how it came out (even if it is only half of what the original idea was...), I honestly do think that Refuge is my personal favorite. So many things went right with it in terms of the construction. It had its hurdles during development to be sure, but the waves of release wash away all that grit. Once the video is out, the production problems don't matter anymore--only their impact on the final video. And, honestly, I don't think the production problems really marred it in any meaningful capacity. At least for me, when I watch it back, I don't see any real tell-tale signs of troubled development. I see flaws to be sure, but none that are solely a result of production problems.

I also really like Fraternization, and consider it one of my best works as well. People have criticized it for having "janky" motion, but I honestly don't see it. Maybe I'm biased because I know how the sausage is made, and so I know exactly what tell-tale quirks to look for when it comes to how I traditionally animate, but Fraternization to my eye is hands down the most fluid and organic animation I've ever released. And that's small wonder, because it is the only video where I extensively experimented with motion-capture for the dialogue scenes, where the fluid motion really shines. It was an extremely exciting project on a technical level, even if the ultimate conclusion was that my small living space makes motion-capture not viable. I spent more time fixing the motion-capture errors than if I had just hand-animated it all, but there is no denying that--to my eye at least--the final result looks far better than what I could ever do by hand.

Blue Star Episode 3 will always have a special place in my heart, of course. It was also marred with massive production issues, but I don't think the end result reflects them in any capacity.

As to the most fun to make, honestly, that was probably Taking Chances. I just love the Life is Strange dorks so much, and that video was one of the smoothest productions I've had, apart from the massive delays with the audio, which was entirely outside my control.