I am taking up bird hunting with my GSP, and need to purchase a gun. I want something that will be well rounded at a good price. I have been told 20ga, but there seems to be a lot of other spec's involved as well.

This will just be something to get me started, so I wan't the cheapest, non-garbage gun there is.

I live on the Kitsap Peninsula, in Washington State (Seattle area, kinda). Wondering where to go, how much to expect to pay?

Thank you!