Alright, so I'm liking the 50mm focal length that the nifty fifty gives me, but think it's time to put some better glass in front of my 5D2's gorgeous sensor. So, two possible options (among many others) are above.
What would you do and why? Also, I'd like people to state if they have got actual real world experience from the lenses or just third hand internet hearsay.
Edit: I should mention I'm looking for answers from a FF point of view 
Sigma 24 + 50L
