Better to sell Series 3 with a "stock" HD or an upgraded 1TB HD?

I fixed a friend's Series 3 by putting my original Premiere 320GB drive in (reformatted, of course, with a clean Premiere image on it, via WinMFS).



Now that I know it was the hard drive, what is the best way to sell it? With the 320 GB or *buy* a 1 TB and sell a little more?