Okay between 810x and 813L exclusive.. i think it comes down to your current collection and how unique you want to be. To me I think 813L will have more wear, as its more 'standard' blue jean.. its beautiful and you can most likely wear it to many events and outings.
where 810x is more like a unique fan based wash.. some will like it some won't. I like them only cuz its rare. How often can you see striped jeans looking this nice!? hahaha
Also do you have funky shoes and other gear to match 810x accordingly? I know I don't!