Let's see. Lion Force Voltron's available in Australia, so nope to that, even though I loved Voltron. Never like She-Ra or Centurions, and always HATED Gummi Bears, so sod them off. I don't know Bravestarr, and Go-Bots was nothing but a Transformers knock-off.
MASK, looking back, was an even more blatant toy ad than Transformers, with none of the memorable characters. Conan the Adventurer was damned cool, as was Pirates of Dark Water, but they lose out to two things: Cities of Gold and Exo-Squad.
Cities of Gold was just such a long, epic and altogether brilliant saga, and haven't seen hide or hair of it since I was about 5 years old. I still have memories of literally running back from school to see it every weeknight though. I'd buy it in a second.
Exo-Squad I remember as early 90s, and there's one series I'd like more from then (Teknoman), but still, it was great. I remember it as being as close as the Americans ever got to creating as awesome a war/space opera saga as Super Dimensional Fortress Macross/Robotech (which I will be buying this year). The thing I remember most is just how often humanity got the snot kicked out of it in the series. I think by the end they were on the Resolute III as their flagship.
Thanks for the nostalgia!