Aggro? Not at all. Skittish? Sometimes.
Avicularia are the teddy-bears of the tarantula world and pretty good ambassadors to arachnophobes. By the way, "Peru purple" is probably
Avicularia purpurea. Some are brilliant as adults, some are kind of dull. The young are greyish with the standard Avic tiger-stripes. Keep the slings nice and humid.
I've never seen an Avic with a bald spot and I've only seen them flare once or twice at a friend's place; the response was "Aww, you've got venom dripping! So
cute! "
Cyclosternum are fast and insane. They're not very large as adults, maybe 6-8 cm legspan.