I have a 1G PNY SD card (non-high speed) and a 1G Sandisk Ultra II high speed SD. Loaded them both with about 900+ MB of songs and they both work fine. The only thing is it takes a little time to load SD disk and surprisingly they both load in the same amount of time. Makes me wonder wether it's worth it to get the high speed disk. Anyone else have thoughts on high speed vs regular speed SD cards?