I know the feeling.
I visit my local shelter regularly to donate food and I cant help but take a look around, I just want them all. If I had a huge house and lots of money I would have adopted every last one.

We were there last weekend and there was the most beautiful male lurchur there, he was a stray and didnt even have a name.
We took him for a walk and every few minutes he would stop and throw himself against me for a hug, it was heartbreaking. I wish I could have taken him home but I dont have the room and he was a really big dog.
Maybe some day....
Good luck in your search!