I have a Rain Mstand for my 15" rMBP. I like it a lot, able to get my laptop in the perfect viewing height that I don't need an external monitor anymore.
The only complaint I have is the hole for cable management is a little awkward. The ports on the laptop are far enough away that there really isn't anything to be gained by using it. Pretty minor complaint though.
That's kinda waste considering Retina display.
Looking into getting a stand for the MBP. Could you guys link me to some stands that you use or recommend? Thanks guys.