I know it is all personal preference and a lot also depends on money. Is there a huge difference anymore between Canon “L” and the newer Sigma lenses? Looking in the sample section and I see good and bad of both companies. I would like to add to my existing collection of lenses, a whole 3 right now, and would also like to possibly upgrade what I have. I was thinking adding a Canon 135 or the Sigma 150 or 180 in the future but not sure which company is the better one. I hate to buy a Sigma and then upgrade to a Canon later on because of the better picture quality. I rather buy the best and be done.
Any input is greatly appreciated.