That's gonna be a difficult gun to find. I have an X6 level 1 9mm and an X5 Competition .40. Neither are for sale. I looked for them used over a year with no luck. I ended up buying them both new at the same time. I use the X5 for duty carry and the X6 for IDPA and IPSC. You'd think the 6" barrel would be too heavy and too long but it makes up for the weight with accuracy. My IDPA matches are always scored man to man and up to 55pts. I've gone months without losing a point on accuracy. I'm not always the first to the finish block but I never miss the target. The double tap shots are always perfect center and never more than 1" apart. If I wasn't so big (6'6" 260lb) I'd probably win the speed part too. Oh well.
I've never seen a used X5. Pay the extra $500 and get the X5 level one. For perfect accuracy get the X6. I paid $2150 for my X6.