Personally, I'd have to pick the Morrowind/Daggerfall style just because it allows for much more detail at less cost and annoyances I think every one who's played Oblivion would know what I mean as well as it making the game more mod friendly. True you can make a mod containing dialog in Oblivion with or without voice acting, but to make something that's on par with the game and fits the style is a very hard thing to accomplish. If it's not done right or at all it can really knock a mod down in value.
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