Well - You cant go wrong with a Baikal SXS. If you get one with removable chokes and a single trigger, then you can use it for all variations of clay games. Tremendous value for the cost (~450$), and if you don't like it, or your tastes mature, the risk of financial loss is low. Alternatively, you could go with one of the older Brno's from Tradex....
For the folks that like to use the "B gun" terminology, I call these "b guns".
For the folks that like to use the "B gun" terminology, I call these "b guns".