Set-up with two subs and an integrated amp

But it of course also leaves out the more delicate yet important surgery of high passing the amp, which if done right ( integrated w sub XO slope ) will yield incredible sonics....

in which case, I would pick a Vandersteen sub or two

Maybe....
the OP states he owns the LM.
sometimes it is useful to ask a ? Or three before leaping...

so Dave the OP do you own the 2 subs yet ?

btw I prefer the 993 in Euro trim Adventurine Green a switchblade to the 996 X-50 Machine gun