Are American Eskimo's good apartment dogs?

I want to get a dog. I’m in an apartment and will be for at least the next 2 -3 years, so it has to be a good apartment dog. By this I mean:

-not prone to excessive barking
-lower energy level
-easily trained
-between 15 – 30 lbs

I am going to just go to animal shelters until I find “the one,” and I assume it will be a mix. But I want to know which breeds are good to look for, and I really like the look of American Eskimo dogs and resulting mixes. I also like King Charles Spaniels and Shelties.

Do you have any experience living with these sorts of dogs, or other recommendations for dog types that fit these criteria?

Thanks!