Lovebirds would be a good chocie. I used to have a baby lovebird, who I handfed myself, and he was my best friend. But also I had every hour of the day to spend with him. I think if you get a handfed baby that has just been weaned, you won't need another bird for it to be happy. But if you dont have the time to be with it, you will have to get a pair. But keep in mind that if you do get a pair make sure they are tame, becasue it is hard to hand tame them twice.
Lovebirds can be Awesome, but not for someone that has a job, or is schooling, and that's just about every one, unless they are retired.