I'd go Encore Devvie if I were you. While MP Thundercracker may be hard to find, the fact is that it's still a Hasbro release that did come out in Australian stores... so you have better odds of finding an MP Thundercracker later on, whereas there's zero chance of finding Encore Devastator in stores here since that's a TakaraTOMY exclusive toy. Unless you wanna wait and see if Hasbro releases their own G1 Devastator reissue, but even if they do, it might not get released by Hasbro Australia.