SithThundercracker
Super Freak
I wouldn't call the HT vs SSC stormies night and day differences - the snowie is a major improvement though. Side by side, the HT and SSC stormie helmets are actually quite similar looking - both equally inaccurate (the reason so many are buying the custom 1/6 "stunt" helmet for use on their HT stormie.)
The HT stormie is definitely a superior figure, but the improvements HT made in the stormies were most in the bodies and maybe finish, not accuracy (though the SSC codpiece was pretty notoriously inaccurate.) I never had the SSC ones, but they look pretty similar to the Ht side-by-side.
Yeah, HT Stormies are not accurate 1/6 ANH stunts but they are indeed, overall, a day vs night improvement over SSC. Almost every piece of the armor is better shaped (not only the codpiece...I'll add at least the shoulder bells, the chest armor, the shins and the tights) and the helmet is still slightly better. Add the finish, the details (the holsters for example are not even comparable) and of course the body...day and darkest night ever.