[Rover]

 Well, to comfort you I put the numbers in, too. Although most of the tested/measured parameters don't speak for the Canon, the differences are not that massive.

 

And you can always do what I did: Sell your Canon (except you're interested ind the best value in Lateral Color Abberation ) and get the Sigma plus a nice dinner.

 

To me, the 24/1.4 was quite often very useful. I would give away other lenses more easily than that one.

Well, the exchange rate has gone so wild since then that I wouldn't really win anything now. But I could have back then.

Not that the 24/1.4 L is a bad lens by any measure... I'll take comfort in the fact that it's weather sealed unlike the Sigma (the only glaring omission in the A series lenses... almost looks like they looked for a reason to create a flaw in it! )