Whatever you decide make sure you do TONS of research and know what your getting into before you start spending money.
Gecko is right. I have had malawi, Victorians, tangs, and a few new worlds.
Malawi is the easiest, but can also be a pain, and take a lot of work. They are more readily available and common, and probably are the easiest to curate, but I say go for the gusto. So many times I've boughten a fish impulsively, or set up a tank impulsively, and then a few weeks later wishing I had done something different.
I'm very happy with my tanks now, but if I would have done more research, or been more patient, I would have had what I really wanted sooner, and in better working order.
I'm still figuring my fish out honestly. I don't know if you ever get to a point where your just perfectly content with what you have. There's always another fish, another species, another tank make etc. it's way too much fun, lol.
Sent from my iPhone using Aquarium Advice