I'm running Fresh 2.4.0 and I've run out of space on my internal memory (not that many apps, but still less than 20mg free). I'm looking to use App2SD, but the link off the Fresh 2.4.0 XDA site for App2SD FAQ's (FAQ: Apps2sd Information) suggest that I use a Class 6 micro SD card. However, the Sprint HTC Hero website says the phone can only use Class 2 settings. Is there any advantage to spending the extra money and buy a Class 6 card? Is it really necessary to run App2SD? Any insight would be helpful!