For all the questions about Canon's 50mm range and how each one compares... here's a comparison of each's Bokeh. 1.2/1.4/1.8
Now, if you can justify and even afford spending 1500 on the lens to the far left, that's awesome.. but personally, the 1.4 is perfectly fine for just about 99.7% of everyone, and for 1/5th or so of the price. And if you're going to go as far as to spend like 6 grand on the Canon EF 50mm 1.0 L? You're just an idiot haha.