belias1989 wrote in post #14623422
actually I already have trauma on 3rd party lens providers. I have bought my Sigma 50mm 1.4 2nd hand and once I've test it the manual focus won't work and have to send it to Sigma and also calibrate it to match my 600D, very frustrating. There are times that I want to sell my Sigma 50mm 1.4 but I want a lens for low light photography so I decided to keep it. With that, I am convinced that I should only stick to Canon lens on Canon bodies. It will save you from worries and stress.
The sigma 50 is reputed to have issues with focusing. The 17-50 isn't. I haven't heard of any with focusing issues, and you get the same level of IQ as the canon 17-55 for $400 less. The sigma would be my recommendation. Plus, you say its the manual focus that doesn't work and you bought it second hand. Unless you knew about the problem before buying the lens, what makes you think this is sigma's fault and not the previous owner?
Either way, you said yourself you don't really use longer lenses, so why is the 70-200 even a consideration? If you just want to "try it out", then get a 55-250.