I too am surprised by the two choices. The JL Audio E112 would be better compared to the SVS SB13-Ultra or the Rythmik E15HP or F15HP, and all of these sealed subs would be outstanding for music in a room your size (and impressive for movies). However, since the sub will be 90 percent movie related, it's a no brainer between the JL and Hsu. Get the Hsu based on price/performance ratio alone. But I'd also look at the Rythmik FV15HP. You should also look at subs from Reaction Audio and PSA.
Note: SVS and PSA will pay the return shipping within the trial period if, for any reason, you do not like the sub. Both SVS and PSA (and perhaps Reaction Audio?) have 5 year transferrable warranties. And Reaction Audio and PSA (like Hsu before them), are offering exciting new models that are bound to impress for less money than the JL Audio.
Oops, didn't see you were in Canada. My mistake (all I needed to do was read). Check with any subwoofer company you are thinking about on shipping charges. I do believe there is an SVS distributor in Canada.