[au-arms]

More expensive with or without the spacer components?

[bryanrasmussen]

I would think more expensive with spacers, you have more nodes to repaint, furthermore if you have an event that changes a particular spacer size - for example if you have contentnode spacernode contentnode and then change width of spacernode you will be repainting three nodes. Window resizing becomes more expensive seems to me.

[kadoban]

Probably more expensive with spacers? I'd like to see some benchmarks though, I'm doing little more than guessing.