well the reason I only want one is cause you need to keep an odd number so if they pair up I cant do anythign with the odd one outI love giant danios, they have a great personaility, very active, they tend to stay near the top
Get some more Angelfish, they look very nice and they would get along great with the swordtail's.
Look around though to fine good ones, some at LFS are very small and don't look that good.
A lot of people bread them so you might be able to get some very nice ones from them.
Look here, they are beautiful
http://images.google.com/images?q=freshwater+angelfish&hl=en&um=1&sa=X&oi=images&ct=title