Yes, the Taurus is a rare item, and always was really. I had two through my hands - I sold one (previously owned by Sting and heavily modified) and saw it wrecked by a mad bassist friend. I think I know where it is and it is in a pretty sorry state.
I bought a Taurus 3, but I didn’t find it useful. It was OK, but didn’t have the immediacy of the original and there was something just not quite right in the basic sound. I sold it.
As a backup to my aging Taurus I bought a Minitaur, but it really doesn’t have the heritage sound.
(Let’s leave the Taurus 2 where it belongs - justifiably forgotten…)
So yes, original and best. It’s one of those items you buy for life.