Yes, TT's eRaptor E550 is back with a "improved" E550S. Being a E550 owner, I dont see much difference.
http://shop.rotor.com.sg/show-detail.asp?prodid={5339FA81-BB16-4C24-994C-B0D208F5042C}&pn=
http://shop.rotor.com.sg/show-detail.asp?prodid={5339FA81-BB16-4C24-994C-B0D208F5042C}&pn=
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