Pick a favorite??? HA! I love my Nubians, so sweet and mine is timid, then my wonderful Guernseys, so laid back and quiet... they talk but they have a more muted voice, can't pick a favorite, love them all....
My favorite is definitely Boer. They are so playful, but still gentle and very loving. It is amazing how they have the simplest coloration range and you can still get caught up in a cute little blaze that they have, or a small spot on their side.
Second is Nubian. They tend to be dominant and sometimes pushy in a herd, but I love their ears! They are the cutest things when they are born too.
My favorite by far is Alpine. Oberhasli follows in the #2 spot, with Lamanchas in 3rd.
I have Nubians too, but they are not my favorite. I enjoyed the Nigerians but I don't like their size, too dangerous around my prey driven dogs, not enough milk and most are difficult to milk with arthritic hands. I had a herd of Saanens left behind by a farm hand (top quality herd he paid mega bucks for) and they were sweet enough, but I'm not a fan of all white goats! I had a Togg/Alpine cross rescue doe that was great, so i would like to own a Togg some day.
I had Boers too. They were nice animals, but raising meat just wasn't for me.
I had a few Pygmies, but for me, they were pretty useless. I can't afford to have just pets, they need to earn their keep. The Pygs just couldn't do that. Even selling as pets, people in my area just never got into Pygmies, preferring the Nigerians.
I've never had fiber goats, have heard they are sweet. Wanted to for a while and learn to spin but that pesky money thing just keeps getting in the way.