Original, although if the Greg Lake one would have been a studio version he might have sounded better, was the second option studio as well? it sounded that way to me.
I must say though that the last option acoustic was different, not better than the original but different, and that can be good too. Sometimes I have a hard time with comparing Studio to live to acoustic. Studio usually beats live for me, but the acoustic can beat studio if done right. In this case of these 4 options, my vote went to original studio version.
Acoustic get's second place vote (So I guess it's safe to say that vocalist is preferred
The 90s version was a studio version. Sometime around 96 or 97 Geoff Downes decided to re-record some of the band's earlier hits with his 90s line-up of the band (of which he was the only remaining original member). So there was a different drummer, guitarist, and vocalist (John Payne). The material with Payne was more progressive and less pop oriented. Payne has a good voice and I really like some of the original material Asia recorded when Payne was their lead singer but I'm not a fan of Payne singing the old John Wetton material.
Asia's best album was their debut. imho their best album with John Payne was 2001's Aura