So, my Tau-affiliated Imperial Guard, the Bifrosti 121st have themselves a Riptide. In the army list, it's part of the Tau half of the list, rather than the IG allies; the conversion is purely for purposes of awesome.
It's based on a gift from a friend: a Geara Zulu 1/144 scale Gundam model; it has 13 points of articulation, can be reposed in any number of ways, and is easily the equal of any model GW have produced. It's also unpainted - those colours are the colour of the plastic. Also, no glue would be needed; it just fits together.
Also, it cost my friend £18. Oh, and it came on eight sprues, one of which was made of four different colours and two different types of plastic. GW? They are NOTHING compared to the complexity and elegance of this kit. NOTHING. (And I say that as a fan of GW and a man who knows nothing at all about Gundam, and doesn't care to learn; 40K and Westeros is enough for me.)
Oh, and before anyone says "Yeah, but the instructions are in Japanese"? Pah. The instructions are in picture form; I had not one problem. Apart from the one backpack jet nozzle that flew off and needs locating, but that was more a slip of the clippers than a problem with the instruction.