It's a toss up between eyes and arms. Depends where my glance happens to land first, but I think the eyes do win out, in the end.
E.g. If a man has nice arms, but his eyes aren't very nice (kind, interested, connecting, pretty)... no way, I'm already done. But if a man has very nice eyes, then I don't care what his arms look like. Hopefully that makes sense!
For the record, my husband has stunning, kind eyes that are the color of dark chocolate, with the longest, sexiest (natural) lashes you'll ever see on a man OR a woman. Rawrr!!
One of a kind.