It is up to you. 250GB is more than you may ever need. I don't know if the hard drive model is thicker. It may also weigh more. Also the hard drive would be more prone to damage than the flash memory.My Pandigital just got returned, so I am seriously considering upgrading to this. My question; being that there is only about a $5 difference in price, which is better, the 8G (flash) or the 250G (hard drive) model?