I've been looking at different AI addons. Is it actually worth paying for something like Ultimate Traffic or does the free World of AI do a good job? I assume World of AI should work fine despite the volume of downloads needed to complete it.
Also I'm started getting some terrain meshes from FSGenesis (used them on FS9) do you need intermediary meshes for FSX like you did for FS9 to reduce tearing when flying higher or just scale back the detail level if flying high?