yep, was doing some research and read in a few places, if you use slow cards video shooting in HD will not be continuous and it will stop after couple of minutes. While with Extreme there would not be any such issues and you can shoot longer HD videos.
Saw a good deal on ebay for the extreme :
Also they have shipped half of the package with fedex, with a delivery date of Saturday. It mentioned in the email the rest of the stuff (UV filter & blower) would come via post.
Let's see when it reaches.