The best thing I have heard about cocker spaniels is that "they are very nice people".
We are on our third cocker spaniel. Jordan lived to be 13, and we then had Rupert who is now 9. Bertie is our latest addition and he is 7 months.
All of our cockers were show cocker spaniels and have the most wonderful natures. Jordan was very much a mummies boy, Rupert is more of a mummy and daddys boy whilst bertie is growing up to be mummies boy.
That said they are friendly with other dogs, come back when called and most of all friendly and kind with people including our 2 grandchildren aged 4 and 7.
They do not bark excessively, having said that our neighbour has just got a dog that barks all the time and they will join in whilst in the garden. we are trying to stop this.
I would never have a different breed of dog because you cannot improve on perfection.
Good Luck.