Would rather take these:

-Part number: 286981 - - Corsair Mac Memory CMSA16GX3M2A1333C9 (2x, 8GB, DDR3-RAM, unbuffered).

So far I have only installed the Vengeance in ASUS Zenbooks! The Corsair MacMemory already in several Macs!
But "off the top of my head" 1333MHz seems better for MacBook Pro 2009 anyway (check!!).

Good luck!

Check with serial number: http://www.everymac.com/ultimate-m...
Compare slot etc. Basically, all aftermarket products that "fit" will work. - However, no apple store can help with errors.