odb ii

Hi !! I'm looking out for ODB II reader and my autopart store gives me 2 choices of code reader. Here they are... http://www.canobd2.com/Products/ToolDetail.aspx?Id=763A01C0BC384B16B8C8879106AA7F9F http://www.launchx431.ca/c-reader-v.php Witch one should I choose and for what reason 1 is better...