If the willow in arbaro is too heavy for your tastes (or computer) you can always lower the number of branches. There's a submenu for each level of branching.

I think mine might be a little too thin, but my computer would hang on the default one included with arbaro.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.