You can see a full item list here:
http://andorstrail.irkalla.cz/itemlist.php
I'm actually no sure about your second question. I know that having a decent Critical Hit skill and Critical multiplies is useless if you have a non-existent Effective Critical Chance (ECC). But I'm not actually sure now ECC is built/developed. I've gone the way of favouring raw Attack Damage over Critical stats, so I haven't done much searching into it.
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I'm currently using Xul'viir as a weapon (Two Handed) simply because it's bad-ass evil (which appeals to me), but I spent 100 levels dual wielding two Balanced Steel Swords. Raw AD.