It's really a shame so few budgies ever reach their potential. Otherwise they get quite lonely. Budgies are quiet birds. The males, especially, are pretty good talkers. Teaching them their first few words can be difficult, however once the first words are learned many budgies quickly learn more.
Budgies are active, playful little birds.
A very tame budgie is also cuddly, loving to have it's head scratched. Tame budgies love being out of the cage and doing things with you. They're inexpensive, fun to keep, and easy to tame. Also, after your budgie is tame and you clip his wings, let him come out of his cage and climb around, preferably on a small playground or stand, about once a day or so. An active budgie that has places to pent that un-ending energy is a happy budgie.