Forum:Turn Player Priority?

I am not sure if I understand turn player priority. So I will present 2 scenarios played differently due to turn player priority, and I want to know which is correct.

My opponent is Player B, and I am Player A.

Scenario 1: Player B has 3 spell/trap cards facedown, and 1 monster facedown. Player A has 2 spell/trap cards facedown. It is Player A's turn. Player A activates Heavy Storm, and then according to player priority, Player A is able to immediately activate my facedown Starlight Road, without letting Player B respond. So then let's say Player B had a facedown Solemn Judgment. Because of turn player priority, Player B is only allowed to activate Solemn Judgment in response to Starlight Road, thus Heavy Storm's actiavtion is not negated. Result: Player B paid half of their life points to stop Starlight Road, but Heavy Storm still went through.

Scenario 2: Player B has 3 spell/trap cards facedown, and 1 monster facedown. Player A has 2 spell/trap cards facedown. Likewise in the previous scenario, it is Player A's turn and they activate Heavy Storm. Player A asks if Player B responds to Heavy Storm being activated. Player B responds with a Solemn Judgment, therefore preventing Player A's Starlight Road from activating. Result: Player B paid half of their life points to stop Heavy Storm, preventing the activation of Starlight Road.

Between these 2 scenarios, I think Scenario 2 is correct. You should always give your opponent a chance to respond to your cards before you start chaining your own cards. However, the majority of the other duelists in my area believe that turn player priority is above asking your opponent for responses, which seems unfair, especially in something like Scenario 1.

So I would like to know, which scenario is more correct? Or is this something that is different between areas? :S