Hey DelD, that's an excellent system you've choosen, very similar to mine, and I"m sure you'll be very happy with it.
If you search the forum a bit you should find quite a bit of mention between Axiom, HSU, and SVS. All are excellent however, many here find the HSU or SVS to offer a bit more price/performance value for the American customer. For Canadian customers there is less of a difference in this regard. The Axiom subs are known to produce very tight and clean bass and are most often described as musical subs. They definitely would be pleasing and would match the rest of the system. Do a search for a poster going by "Chesseroo" he did an excellent review between both his EP350 and an SVS sub and this should give a good idea of what difference to expect between these two. In short he thought the EP350 was best for music and the SVS was more appropriate for movies. Its a good read...
Good Luck and happy home theatring, Jag
