Upgrade advice from Spotfire Server 7.71 to 7.9 or 7.11

Hi all - seeking advice or suggestions please, we're on Server/Analyst 7.7.1 and want to know opinions on upgrading to 7.9, 7.10, or all the way to (bleeding edge) 7.11. We've been told in the past to stay at least one version behind the current release, for stability.

Appreciate any thoughts out there! 



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