Today I received the Yincrow RW-9 purchased here:
Have this for a couple of days now. It can be sum'ed up as the "improved Yincrow X6", mainly you still get a slightly V-shaped sound from the X6, but with a better textured and forwarded midrange, making it the most balanced of all tuning in the whole Yincrow's line-up. In fact, I think I like it ever better then RW-777 - given it is actually cheaper than RW-777, I think Yincrow has gotten itself a winner here.