The DianSheng Solar S2M UV Coated is only the 2nd mass produced UV Coated 2x2! It is also significantly cheaper than Gan's 251M Leap UV. Unfortunately though, it does not turn as well as other 2x2s, it lacks corner cutting and that leads to some annoying lock-ups, maybe it might be slightly better on looser tensions but I think most people would far rather get the MGC V1 or RS2M Evolution in that price range. You can buy it here