First Time Dog Owner…ckcs, Papillions, Or Igs?

I am a soon to be first time dog owner (have had family dogs in past but none of my own) and have narrowed down my breed preferences to Cavalier King Charles Spaniels, Papillions, and Italian Greyhounds. Any advice or personal experience with these breeds that could help me decide would be appreciated.
Here are the specifics to my situation:
* Live in townhouse with plenty of yard
* Exercise need is not an issue
* Have never trained a dog before
Thanks.

My Dog Always Barks At Dogs When Were On Walks, The Only Time He Doesnt Bark Is When A Dog Barks At Him!?

hes a german shehperd greyhound crossbreed, and hes just over a year old. we got him at a shelter and hes always been hyper, but hes neutered as well and it hasnt helped with his barking! when I try to get him to socialize he will be overly excited and will scare the dog AND after a while he will start to growl and bark! if i take him to petsmart or a place like that for training, i know hes guna go CRAZYY and bark the whole time, not safe at all because hes so strong! PLEASE HELP!!