How do you like the rokinon? I've been thinking about getting something like that.
It's built like a tank, I'll tell you that.
I personally love all of their lenses because I shoot a lot of video and the manual focus is extremely smooth. Plus the manual aperture ring is the only reasonable way to adjust exposure while filming (Like going from inside to outside.)
So pros:
Build
Great optics, really sharp and handles CA fairly well
Focus ring is smooth and weighted perfectly
Metal mount
Cons:
Aperture ring darkens viewfinder as you get a smaller aperture, not too big a deal
All manual, ideal for video but you can use it for stills just like a regular MF lens but I grew up in the age of autofocus haha