Sandisk Ultra II or Extreme III? Which should I get?

Amazon has "bulk package" Extreme III 4GB cards for $25.26 + $6.99 shipping. I ordered one today.

I'll add another response. I have an Extreme IV and four Ultra IIs and with shooting at max speed, the IV will shoot 17 in RAW, whereas the II will do 16; so not much of a difference. Although I expect one can shoot many more in JPG, there is really not difference in RAW, so I'd go with the cheaper card. But to each his own.