-or a labsub with ONE lab12 + flare extension

or-

-my own basshorn with lab12woofer

i know the labsub is the best way to go,but will be abit wobbly response if its used as a sofa NEAR not in proper corner position..

i can only afford ONE lab12 per box,dont need PA levels of output and wont be using 2kw.

should i take the hard road and use my own LONG horn ? its hard to optimise internal volume :-S
thanks