Optima choke vs optima plus???

[daka]

I have big confusion and dillema when buying chokes.
I have beretta 682 gold E shotgun with optima chokes.
All the chokes i found were optima plus and need to know for sure are they same chokes.
I know for optima HP that fits only specific models but there are optima plus, optima plus spectrum and looks like they run out of names.
Can someone explain me the difference and tell me can i or can i not use optima plus in my shotgun.

 

[adamg]

Beretta needs a kick in the head for their choke names.

 

[nemesisincanada]

Optima
Optima plus
Optima hp
As far as I'm aware they are all different and not interchangeable.