Thanks for the response! I joined the "talk parrotlet" forum a few days ago too- and have enjoyed looking through all the member's lovely birds.

I think a hand-raised, socialized baby is the way I'll go. It'll be hard to resist petstore ones, but I know it will make all the difference in the end. Sometimes I see ones that need rehoming on sites like craigslist, but if they aren't friendly as adult (or bonded to another adult), then they probably won't ever be that tame?

Still have lots of research left to do...