Good choice for privacy screen in West TN?
What would be a good choice for a 'privacy screen' shrub/tree for this area? We'd want something fast growing, that grows tall (maybe 12' in one location, 8' in the other - although ultimate height doesn't matter in either location - the taller the better). The two areas are roughly the same length (20' or so). One is full sun, all the time. The other is morning to early afternoon shade (depends on time of year), then also full sun. No concern about neighbors, what would drop off of it (branches, etc.) Soil in both locations is well-draining (maybe alittle wet), kind of clay-mixed-with-better soil (I don't mind if we have to import/ammend the soil).
Look forward to any input / advice anyone has. One area is just ugly, the other is, well, in need of a privacy fence (not fence panels). :)