Port City 2x12 vs 2x12 OS?

[cander328]

I have a Port City 2x12 OS and although it is a nice cab there just seems to be a bit to much low end for the way I like to setup my Two Rock CRS (I am not a high gain player). I am considering a trade for a non-OS 2x12 but would like to hear from someone who has had both. Is the bass response less pronounced on the non OS? What are some of the other sonic differences between the 2? Am I just better off going in a completely different direction for a 2x12 such as the TR Sig 2x12?