I am a bit biased towards amazons for many reasons, but one major consideration with eclectus is they need a very specialized diet and are prone to very serious health complications if their diet is even a little off and it can happen very quickly. Amazons are much hardier birds, and while they definitely still need a healthy diet with an abundance of fresh produce, it takes a truly horrible diet for a very long time to make an amazon sick.
Personality wise, my male BFA (adopted as an older rescue) is a funny and rather opinionated guy. He is not a very cuddly bird, nor are most amazons (especially males) but he is still friendly and social and loves being included in all household activities, usually preferring to sit on a portable perch and LOVES to go out and about (weather dependent) with us in his backpack carrier. Like most amazons, he loves food, baths and toys. My guy won’t fly, but amazons can be skilled flyers if raised that way (mine has been clipped his whole life and can’t seem to learn as an adult). Like most amazons, he seems to get along ok with other amazons but isn’t terribly interested in other species. He seems happy as a single bird, though that is likely due to his background. I would never allow an amazon to interact unsupervised with a smaller bird, they can be pretty aggressive if they want to be. Speaking of, amazons, especially the males, do have a reputation for hormonal aggression but rest assured, it’s pretty hard to be ”surprise” bitten by any amazon. They are very expressive parrots and display clear and obvious signs they are in an foul mood and it would be most unwise to place a body part in their vicinity at that time. All amazons should be stick trained (I.e. will step up and ride on a wood dowel, for times they are too angry to handle). Thats about all I can think of off the top of my head about male amazons. If you take good care of them, they’ll be an awesome companion for life!