SlicAx, welcome!
From all I've read, if you want a "musical" sub, stick to Axiom, if you want depth and spls, you might find better offerings from HSU, SVS, ED... for the same price range.
From your post, it sounds like this will be your first Axiom purchase and starting with their sub is a bit odd. Not that their subs are bad, just not what they're known for.

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."