I dunno, I found the Sassanid Clibs to be the most overall ubar. It's the damn bows that do it. Those buggers have so much armour they can just sit there and shoot to pieces anything that'd run away from them if they tried to close in and bash their skulls. I consider them the *real* tanks in the RTW scene - they've got guns too, after all. They double nicely as ridiculously arrow-resilient archers; I've seen Comitatenses caper uncertainly around in front of a few, and had they been any *normal* sort of archers the Commies would no doubt have been coming on like a public prosecutor...

The original Catas are nice with spears and all, but I don't really think the higher charge bonus makes that much difference. Not compared to the all-around usefulness of the bow, which also makes raking up exp depressingly easy.