Are you that dissatisfied with vB3 that you're migrating? or are there other concerns driving your decision?
In all fairness, Threads 6.5 is not the best release and most would not recommend it; 6.5.1 alleges to have numerous bug fixes; many people are waiting to upgrade from an older version or they're on 6.5 holding their breath for 6.5.1.
Browse InfoPop's boards
for the numerous outstanding issues and fixes.
We are considering migrating to vB3 due to these issues with 6.5, the wait on 6.5.1, and InfoPop's decision to discontinue Threads and Classic in 2005 in favor of (what appears on the surface) a product that still doesn't compare feature-wise to vB3.
I don't mean to start a Holy War, but it is what it is..........