"No esata or hdd dock, just the WD elements case with usb 3.0"
Is that SINGLE or DUAL drive?
It's hard to find inexpensive dual-slot drives with good feedback. Also, not sure what capacity your HDD's but it's about $90 for a 2TB USB drive and $120 for a 4TB HDD so buying your own case can be hard to justify if they are 1TB or below.
A VANTEC is probably the best way to go ($30 single drive):
http://www.newegg.com/Product/Product.aspx?Item=9SIA0ZX2C39682
However two of these is $60 and a nice 2TB Seagate is $85:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822178116
So $25 more to have a single unit (and you can still use the other drives for backup and put in anti-static bags). Also, in my experience the enclosure are NOT AS RELIABLE.
(I know recommending a complete unit seems stupid at first but again look at the numbers.)