any of the dairy breeds would work...
nigerians are a cool mini dairy breed but can have small teets making hand milking hard so check out the girl before going with that breed.
kinders are along the same line (nubian x pygmy)
i personally like nubians, but they can be a "drama queen" breed, look closely at the personalities of the parents of the kid if possible before going with nubians, ive met MANY lovely sweet quiet nubians, but ive also heard lots of stories about noisey stubborn nubians too, they are the jerseys of the goat world though, good production and great for cheese...
aplines are the top milkers in terms of comercial production, they tend to be well tempered and produce lots of milk, personally im not as attracted to them though...(a favorite for soap, they produce alot of milk...)
a favorite that ive heard ALOT of good about is the lamancha, they tend to be good milk producers and those that have them LOVE LOVE LOVE their personalities, definatly a great starter breed if you can get past the ear thing
the oberhasli is another favorite, a swiss dairy breed, and those that have them love their personalities, great producers.
Toggenburgs are another swiss dairy breed (and thought to be the oldest, there top notch producers BUT ive been told of all the dairy breeds toggs tend to be the most skittish despite lots of handling.
they do great in cooler temperatures though and generally of the group are the best breed if your looking for a dairy breed to hook up to milk and not realy interact as much with...they are not terrified of people but most tend to be reserved.
my personal choice (when i get my own farm) is manchas and nubians with mabe a couple mini nubians (nubian x nigerian)
i want goats for similar purpose, milk, cheese and soap/lotion.
if your looking for a good dual purpose, boer x nubian is a great cross to produce dairy goat thats also got good meat potential.