¿ which version blsck shark to buy ?

A question ? I want to buy these headphones, I still can't decide which blackshar v2 or the V2X because there is a difference of 40 dollars, but the (special edition blacks shark) caught my attention because they mention bringing a very cool case and it is something for which I could pay those 40 dollars without problem, (case of the photo) someone knows if they give you the cover or is it a lie, if so, I would buy the SP. on the other hand they recommend the V2X or the V2 which is more worthwhile, someone who can guide me. Thank you, good day!