I got my SSX win choke in the other day and it's a shooter just like the one for my Remington. The good news is that choke likes Hevi 13 and federal 7s. It's the only one I have that patterns both well. Got a new PG 570 tempest that looks like a shooter to. I only shot it twice around 25 yards and both patterns are tight.
Anyway.....I'd said if you've got the SSX, spend that money on ammo instead of another choke.