Hi
I am a dog trainer, I have trained a few of these dogs all with wonderful temperaments. I think the breed may be well suited for your needs!

Here are the breed standards for the English Cocker Spaniel

http://www.akc.org/breeds/english_cocker_spaniel/
Also, try this link:

http://www.ecsca.org/rescuehome.html

As a shelter coordinator, I have to say that you just may walk into a shelter and fall in love with a dog that is just made for you too! Sometimes you just see a dog and know its the one for you!!

Rescue dogs are sooooooooo grateful!!!!!!!!!!!

The best bet is to go around and look, ask to see the dogs out of their cages and get an overview of their temperament.

Good luck to you in your search!!!
Susan