So glad that I found this thread. I've been trying to find out if the Choice Seats actually provided more legroom. I'm a Disabled Vet and my Better 1/2 is disabled as well. I believe that I have found that answer before (they don't - correct?) but came here to have it confirmed. In reading through these posts, it sort of seems that this is true.
I'm planning a surprise wedding anniversary trip to HNL 9/2015 and I can see many of these seats. But if they don't provide any extra legroom then they are useless in our situation.
From here I will try to learn ExpertFlyer as suggested in an earlier post.