So, I know about the difference between Class 2, 4, 6, and 10. But is there any difference between them in terms of loading apps, playing/recording video, system responsiveness, etc? I know that for video recording and stuff, Class 6 or more is better because of the bitrate of the video, but the video I can record on my phone is nowhere near HD so that's not an issue and the only other thing I can think of that could use the bandwidth is loading apps. So does having a higher-class card give you a faster phone, or is there a point beyond which the processor is the bottleneck for general usage? I'm using a Galaxy S 16GB phone, if it matters.