iMac Calibration - Spyder4Pro or Colormunki

Hello All,

Saw a few threads but many seems older and not for the 4 vs colormunki - thanks!

Looking to finally start properly calibrating my monitor as I want my editing to be as accurate as possible.

I have a 2011 iMac and am looking at either the

X-Rite   ColorMunki Display http://www.bhphotovideo.com/c/product/798928-REG/X_Rite_CMUNDIS_ColorMunki_Displ ay.html

or the

Datacolor   Spyder4Pro Display Calibration System http://www.bhphotovideo.com/c/product/838844-REG/Datacolor_S4P100_Spyder4Pro_Dis play_Calibration_System.html

I have read a lot of mostly positive things about both of them and the price right now is about the same.

Not sure if one is better for the iMac display or one is easier to use?

Any experience with these or recommendations welcome.

Thanks!

--
warning: I enjoy photographing my cats deal with it