Never go to a retail store and buy an HDMI cable unless you like giving money away. Now that I think about it you should never buy any cables from a box store like Best Buy unless in an emergency. They are almost always cheaper online by a lot. Heres some from Amazon.
http://www.amazon.com/s/ref=nb_sb_no...-keywords=hdmi
Oh and I have a PS3 and its the way to go. Might cost you a bit more now but the features and constant upgrading of the firmware is worth it. Dont know if your TV has Wi-Fi or internet capaibilities but with the PS3 you can also watch NetFlix over the PS3's built in Wi-Fi connection. No internet cables needed to connect.