Edit: Oh man, I'm about to fall down a rabbit hole now.... I almost forgot about Captain Scarlet!! (Unfortunately ITV have apparently killed off videos of the actual intro, their "full intro" video is anything but. Commercial non-public broadcasting bastards!)
In terms of toy rankings (which was always the best ranking), it goes: Thunderbirds, Captain Scarlet, Stingray.
The Mask was somewhere between Thunderbirds and Captain Scarlet. Transformers had a similar spot, maybe neck and neck with Thunderbirds. But then, Power Rangers came along in the 90s and took the crown. I even made my own custom Lego Power Rangers/Voltron type things out of random spaceship models, that could combine together into one big robot.