Okay, this may be apples and oranges because my system is tubed, not solid state, but here goes anyway.
You know everything you like about the X-1? The detail, soundstaging, bass response and the fact that it seems to bring out the best in your other cables? Well, the X-2 is the same in spades. Worth the price difference, that's up to you. I have all Oritek X-1 except between my preamp and amp, which is an X-2. I never regretted the upgrade.
I hope this was of some help.