Actually what do you want from your mod? More units? better AI? Large map? I am currently DL Sicilian Vespers 3.3 to play. I have played, the long road, regions and proviences mod, lands to conquer and Pro Deo et Rege. All have something a little different.
Third Age and Stainless Steel are both popular and great mods. But there are others that can scratch the right icth if you know what I mean