It's an easy decision for me - RotH all the way. The mini-quests in RotH make the game very interesting and add a lot of variety. Additionally, the rules and gameplay are a lot more streamlined - not all the markers/combat modifiers/spells/etc that seem fiddly in the other games. I realize however that many people will probably prefer the other titles becasue there is a lot more of the RPG character development aspect. That is true - it's just my personal preference for the simpler RotH ruleset.