slow down there folks how much is that new card going to cost ? depending on what your up to an external backup device is not a bad idea, if you need a portable HDD anyway then it will serve both functions, I just got a DigimateIII from amazon for 120 � ans it has an 80 GB hard disk in it, you can also get a 40 GB version. I shoot in raw format not jpg and this requires much more space in my case 13.4 MB per photo so each 2 GB load of card only takes 147 photos but with this device I can take a total of 5750 photos plus 147 on the card, of course it depends on how serious you are, I am serious and also wanted about 80 Gb external hard drive so it was a perfect solution, being battery powered it does not have the problem my old portable disk does having to be connected to a modern usb port else it can't draw enough power, mine came with an external charger but it will also charge on the usb port of my computer