Our California Bay Area neighborhood had all of our tulip trees cut down due to some strange infestation of aphids (and juice falling off etc. etc.); as a result everyone's replanted their trees with other varieties which I think could help answer your question: **'Autumn Purple' Ash** and **'Autumn Blaze' Maple** - Others are planting Fraxinus Americana 'Autumn Purple' and 'Autumn Blaze' Maple, which both turn out to be huge trees with brilliant fall colors: they're fast growing. We have a sapling autumn purple and it's doing about 3 feet a year. **Chinese Pistache:** - For something not too tall (30' ft at most?), most people in the neighborhood have been going with the Chinese Pistache *Pistacia chinensis*: it's a solid tree, although male varieties > female varieties since they don't have fruit. It grows about as fast as your average street tree maple, perhaps a bit slower. Wider than it's tall though, I think. Our city arborists (without any power-line trouble or anything, of course) also mentioned **flowering pear**, **Zelkova**, **River Birch** (Betula nigra), **Western Catalpa**, **Sycamore** (which I think are ugly), a couple varieties of **elm** (**Accolade, Frontier, Emerald Sunshine**, don't know about dutch elm disease), and **red oak**. They may be worth a look as all are unique and different from each other. I daresay the weather's different, don't know how much difference that would make.