Personally, I don't think the price difference between the Monocle X and XL is justified. I've heard them on a 5K pair of ProAcs with an all Ayre front-end. (An amazing combo BTW) You get a little more bass and fuller sound with the XL, but little if any difference in the upper frequencies to my ears. They both have the same geometry, the same core, with the XL having 50% more conductors. You could say the XL stands for an Xtra-Large X. If it was my $800 or so, I'd buy the X and never think twice about it.
To me, after the Monocle X people would be better off taking the leap to the Select series, (well out of both of our price ranges I know) rather than the XL, Bi-Focal or Tri-Focal. You will then clearly hear a difference and definitely get more your money's worth IMO. Instead of paying hundreds of dollars for incremental improvements.
Good luck with your decision.
To me, after the Monocle X people would be better off taking the leap to the Select series, (well out of both of our price ranges I know) rather than the XL, Bi-Focal or Tri-Focal. You will then clearly hear a difference and definitely get more your money's worth IMO. Instead of paying hundreds of dollars for incremental improvements.
Good luck with your decision.