Just got this two almost at the same time, going to burn them in before serious listening session and decide which one to keep in addition to my OG Sultan.
Initial impression is Damascus Sultan has better layering and staging compared to OG Sultan, its has more 3D feeling to it. If you find OG Sultan sound a bit fatiguing after a while that is not the case with Damascus Sultan, there is no harshness at all yet its still has detailed mids and sparkly high. Overall I am not disappointed.