Upload & Sell: On
The 50 1.4 (any brand) was everyone's walkaround lens for 3 decades. Many awesome images have been made with them.
Personally, I prefer the Nikon SC 50 1.4, which is vintage 1970-someting and originally came with my Nikon F2. Currently, I use it via an focus confirmation capable adapter on my 5D2 for low light situations. Its better IQ-wise than the modern Canon, albeit manual. I don't mind MF since that's how I learned how to shoot and this is not an action lens for me.
I'll probably upgrade once Canon updates their 50 1.4 but only if they manage a significant IQ improvement over my venerable Nikon.