There are some views on the Tange Ultimate, Columbus Max and Reynolds 853 Explosifs
here
Adjusted to size 18, my frame weights are 4.22 for both the 1994 and 1996 and 4.5 for the 98. The 1997 Columbus frame may weigh a fraction more than the 96, owing to its beefier stays. It's important to understand though that light does not equal good. The 853 Explosif is a quarter pound heavier only because of a positive design choice in favour of strength and stiffness. Similarly, the 94 could have been lighter if Joe Murray had used a Superlight down tube rather than the ribbed Ultrastrong tube. Would that have made it better? Joe didn't think so.
Which is the best is a question with no one answer. The heavier you are, the more the 853 or 97 Columbus would suit you. But if you think in terms of which is the coolest, a lot of people would go for the Tange Prestige Explosifs, in which case the 1994, being the last of the Prestige Explosifs, and the first with suspension geometry, has all angles covered.