Hello and welcome to the board,
Planning ahead is always a good thing to do when your talking about any Parrot as they do live quite along time. Your life changes year to year so this is the reason many Parrots in general end up in rescues or just unwanted.
Mike brings up great points of interest and please take a moment to take what he is saying to heart because we are all Macaw owners and most of use help out rescues of unwanted Parrots.
Okay, with that said. There are many Macaws to choose from, they all have their own personalities, traits, and bad behaviors.
I would advise you to give time to a local Parrot rescue near you, this will really help you understand what you are about to get into before you make a mistake.
If your looking for a cuddle bug, your best choice is the Hy or Green Wing. They are the gentle giants of the Macaw Family and are known to form very strong bonds with their owners or in most cases, their owner as many are a one person Macaw.
If this is not what your looking for, I would advise you that the B&G or Buffon, or Blue Throat Macaw should be considered as they too can be quite cuddly but also they enjoy time by themselves to hang out on a Java tree or playstand.
if you have alot of handling experience, then I would advise you on the Military or scarlet, they both require great handling and in my opinion can be quite nippy and moody.
you then have your hybrids, but to be honest, I love the purebreds. With hybrids you never know what your getting, just because you may get a hybrid mixed with a green wing does not always mean that you will get a cuddle bug. you could end up with a monster on your hands.
I hope this helps you and only when you are truely ready for a Macaw, I hope you select the best choice for you and your lifestyle. best of luck Joe