From what I hear a locked stradic 1000 drag is enough to push most 2-4 kilo rods beyond their limit and probably snap the 4-6 lb line you'll most likely be using on it.
I haven't looked at a Stradic but what what I would base it on would be which balances my intended rod better.
The only other thing I might consider would be line capacity, if your fishing light for some larger salmon (I don't know what size you call a 'metro' salmon), you might be forced to worry about how much line you can give a running fish and risk being repeatedly spooled. I've been spooled by salmon fishing 8-10lb on locked up 2000 size Shimano's in open water on a few occasions. Luckily I use mono and cheap metal slices for the purpose so it's still good fun. In fact now I think of it, I might give a few people a call and see if anyone is expecting any salmon in close this weekend.