Had a look at the cocker spaniel pack and yes, I would definitely recommend those products. I use those at the shop, as well as on my own dogs for everyday grooming, it's great for detangling and is also a great de-shedder! I do very much like the Best Shot line!
(The Mikki slicker and Resco comb are great too, I have a Resco comb that I've had since the wheel was invented
and it has absolutely no rust on it and has never lost any teeth! Top of the line!)
If you have static in the coat it means one (or both) of two things: the air is dry and or the shampoo is too drying for his coat.