I found a pretty nice amulet the other day, but I'm not sure if it is an upgrade or not. I added a picture of an ingame comparison as well as a comparison from D3UP. Thanks for any input.
with the DPS you are doing, you might be better served selling it on the AH and buying upgrades for your existing gear. Of course, as Venomrules^ pointed out, this amulet will get better for you as your other equipment gets better.
Comparison = http://i.imgur.com/6A2yT.jpg
BNet Profile = http://us.battle.net/d3/en/profile/WhiskeyMike-1242/hero/905234