There's little to no reason to "match" your subwoofer with your speakers, unless aesthetics play a large role in your decision making.
I have read/heard little on Aperion's subwoofer offerings, but I can tell you HSU does have some excellent offerings and will very likely be the better choice here.
Both SVS and HSU offer high quality products at some of the best pricing available. The only way you'll likely do better than one of these two would be to build your own. If you do have minimal skills with power tools, you could build a high performance sub at just about half the price you're considering. Just another option... -TD