I just ordered my 27" iMac. Also have a MBP Retina.

I need a TB drive to use with Adobe LR and storing my Images.

Which one of these drives do you guys recommend? Spent hours and cant decide...

WB 8TB My Book:
Slower performance, like the ability to replace the drives, ok price.
Lacie 2Big:
Like replaceable drives, still not as fast as the G-Tech.
Not replaceable drives, like the look and seems like better heat reduction due to metal casing, fastest of the bunch.

I want to stay around $800 range...

Thanks in advance.