Aniki, If i had only two options you have linked i'd go with the http://www.newegg.com/Product/Produc...82E16833166060 because the factor here is that you will be able to move the antenna to different positions for better reception. I run linksys cards with third party pigtail antennas and not having the antennas grounded to the pc will give you the extra mobility for a better line of sight.
Depending on your router, to make this even better, slap some 3rd party software on the router like DD-WRT or Tomato and boost your transmit signal and your good to go.
GL with your project.
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