I have an Orangeola, mature container height is supposed to be 6-8 feet. First photo is from the week I received it in March 2011 as a 2-foot twig. The last photograph is from last month. There is no Winter color, but the other three seasons are beautiful.
Ya, your choices are pretty wide open - there are about as many varieties as you can image. Try narrowing it down some by leaf-type and/or spring/fall color you'd like.