Which is good brand for MAC memory

i looking 16gb ram 13" 2011 mbp. have found prices over, $139 $280. suggestions?

http://www.newegg.com/product/product.aspx?item=n82e16820233217

http://www.newegg.com/product/product.aspx?item=n82e16820233251

http://eshop.macsales.com/item/other world computing/1333ddr3s16p/

or 1 crucial

http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=87071457a5ca7304

always.

 

wirelessly posted (mozilla/5.0 (iphone; cpu iphone os 5_0_1 mac os x) applewebkit/534.46 (khtml, gecko) version/5.1 mobile/9a405 safari/7534.48.3)

crucial. total novice , installed memory in white macbook myself. easy pick right product, instructions... on website.

 

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