Generally speaking, it doesn't matter (unless one of the subs is really terrible). I recommend you take a look at Rythmik's line of subs for music. SVS makes good subs also, you won't go wrong either way. More is better when it comes to subs, unless you're in a really small room.
Mix and match subs?
I have a Paradigm x10 sub and am planning on adding a second sub.
Would integration be difficult if I a) got a 10 inch sub from another brand (thinking SF Gravis III to pair with my SF speakers); or b) the x12 from Paradigm (for getting even deeper).
Or c) should I just keep all the same and get another x10?
Would integration be difficult if I a) got a 10 inch sub from another brand (thinking SF Gravis III to pair with my SF speakers); or b) the x12 from Paradigm (for getting even deeper).
Or c) should I just keep all the same and get another x10?