Canon EF 100-400mm f4.5/5.6L OR Sigma 150-500mm f5-6.3???

I had 150-500 Sigma, it is long and feels heavy when extended, bought a 100-400 "L" Canon and am very happy now, however the Sigma worked well but I like the Canon heft and feel better

If money is concern go with Sigma

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WSSA # 165
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