Assuming I don't get a sunfire, which will give me more EHP vs a single AP solo lane and AD top / ADC bot.
2 Randuins, though why you'd buy 2, instead of a better item combination, I'm not sure.
140 armor > 100, 1k hp = 1k hp, Randuin passive is defensive, Thornmail isn't. Warmogs is too slow to count much for EHP.
2 Randuins is also more expensive.
randuins has better raw stats than warmogs and thornmail. but no one builds warmogs and thornmail for the raw stats.
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