What atf is compatible with Toyota atf ws?

At this point (as far as Jan 2011) there is not any fluid approved by Toyota or Lexus that can replace it. Valvolile and other brands "claim" it is compatible. I had seen transmission developing problems after 4,000 miles when serviced with other brands besides the original Toyota WS fluid. The price difference is none, the savings are none, the damage to the transmission is questionable , the warranty immediately voided, the looser, the owner of the vehicle. Stick for now with original Toyota WS. google T-SB-0006-11