It's hard to pick a single favourite panel, but here's one that I'm proud of that's also a favourite among the readers. I'd say it was fun to work on, but I gave myself RSI around the time I was working on it (not just because of this, but it certainly didn't help). Still, I do really like the way it turned out. It's more of an illustration than a comic panel, but since I was adding some exposition, I thought I better make it pretty exposition.
From
Lemongrass, in chapter four if you want to see the panel in context.