@abcdw Yeah, it's great. Strict diagrams such as Sequence or Activity UML are almost always perfect. State diagrams are usually good.

It kinda bogs down if you try to display something like a class diagram or ER with a lot of (>10) entities, and the more entities, the harder it gets to make PlantUML produce an acceptable result.

Which isn't really PlantUML's fault, it's just really hard to algorithmically position a graph with enough nodes & edges and keep all parts legible.