Hi all, My new Canon Rebel XS is due to arrive today and I want to get a new SD card for it asap (I have a regular 1gb card from my P&S in the mean time). I am looking at SanDisk, the Ultra II and Ultra III. Seems the difference is 15mb/sec vs 30. My question is, should I spend the money on the 30, or does the camera itself run into bottlenecks to where I wouldn't get the benefit of the extra speed the Ultra III offers? The ultra III is about 2x the price. I don't mind spending the money IF it gets me something (plus I have a family member who works at best buy, so it should be a lot cheaper) but why waste the money if the camera wont write any faster b/c of it? Thanks in advance for the help!