I dont know if its in your price range, but the sigma 50mm 1.4 is a lot better than the canon 50mm 1.4. it would be more advantageous to save up for the sigma instead of buying the "nifty fifty" if you want some decent quality at a decent price.
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Agreed. The Sigma 50mm f/1.4 is one of my favorite primes. Little on the hefty side (which I like), feels solid and is 77mm. Some older ones did suffer from Sigma's terrible quality control and the focus was a tad bit "off". You can always send it in if you need calibration if that happens to you. Not sure about the newer sigmas, mine is from 09. The Sigmalux isn't a bad idea.