Broker Equipment allows you to just Shift + Click the icon to update the current set, in addition to a bunch of other features:
http://www.wowinterface.com/download...Equipment.html
If you've never used a Data Broker addon before, you'll need a Data Broker Display. I personally like Bazooka:
http://www.wowinterface.com/download...7-Bazooka.html
but there are tons of different ones you can choose from if you want something else.