Princess Parrots are incredible birds, I have a hyperactive male who talks really well and is just a cutie! I'd recommend handraised princesses to anyone as long as they didn't mind a not terribly touchy bird. He is just a beautiful bird with masses of personality and looks to boot. Touch bigger than a tiel, so a manageable size. Ours is probably the loudest one out but honestly, lovebirds seem louder than him! He loves to talk and whistle so much.
Bourke's are fantastic too, really sweet, gentle birds much like Scarlet Chested Parrots and Turquoise Parrots. Others I've seen recently are Superb Parrots, Regent Parrots, Rosellas (bit like ringnecks in that they need time spent with them to keep them tame), King Parrots are just precious, I'd love one eventually, all types of Aussie lorikeets are cuties (Musk, Rainbow, Scaly), Australian Ringneck, Red Rumps are good birds. Hehe, well anyway, they are the most popular Aussie parrots
personally, my vote is for the Princess Parrot, perfect size, beautiful colours, talk, whistle, interact with you, love company, hardly bite, honestly, the worst thing about them is those long tails! Waiting for them to grow in after moulting is like waiting for Christmas!!!!