English angoras are the smallest of the angoras. They weight between 5 and 7 pounds for males and 5 to 7 1/2 pounds for females (show weight limits; pets may weigh a bit more or less). Of course, they look a lot larger because of all that wool (long hair)! Some grow wool a foot and a half long on each side! English angoras tend to be and extremelly gentle breed, but they do require the most care of all the angoras. They must be groomed at least once a day, sometimes more (especially with babies whose coat mats much easier).
French Angoras are 7 12/ to 10 1/2 pounds for males and females (show weight). They are usually also prety gentle, but I prefer the English Angoras for temperament. They seem a lot more friendly and cuddly to me. The wool of the French Angora is likely the easiest to groom of the 5 breeds.
Giant Angoras are 9 1/2 pounds and over for males and 10 pounds and over for females (show weight). There is no maximum weight limit for these guys, so they can get pretty big. 12 to 14 pounds is about the average, though. I have not had as much experience with them, but have heard they are pretty friendly.
German Angoras are extremelly similar to Giant Angoras, but a pure one only comes in white with red eyes whereas Giant Angoras sometimes come in black or other colours. Unlike American Rabbit Breeders Association recognized breeds (like the other angora breeds mentioned in this post), they are not considered pure with just a 3 generation pedigree. The International Association of German Angora Rabbit Breeders has a very strict pedigree and registration system to keep the lines very pure. Their pedigrees and registration is very selective about wool production, so if you ever want to spin wool, a registered German Angora, or one from registered parents, is an excellent choice. I do not know about their personality. http://iagarb.spinnersflock.com/
has info about the breed.
The Satin Angora is probably my favourite of the 5 angora breeds. Their wool has a distinct quality that allows more light to pass through, causing a "sheen" that makes the rabbit almost glow in light. It has a shine like satin fabric, and a good sheen is amazing to look at. Like the other angora breeds, they tend to be pretty mild-mannered, though I have seen a few more wild ones than I have in the other breeds.