Currently being hit by LBA to get one of the lens above. Judging from the prices in the US, it is pretty similar with the Pentax being slightly more expensive.
Pentax price: http://www.amazon.com/Pentax-21760-...8?ie=UTF8&s=electronics&qid=1215073664&sr=1-8
Sigma Price :http://www.amazon.com/Sigma-100-300...1?ie=UTF8&s=electronics&qid=1215073664&sr=1-1
Which one would you guys go for ?
Pentax price: http://www.amazon.com/Pentax-21760-...8?ie=UTF8&s=electronics&qid=1215073664&sr=1-8
Sigma Price :http://www.amazon.com/Sigma-100-300...1?ie=UTF8&s=electronics&qid=1215073664&sr=1-1
Which one would you guys go for ?