Hello, I am a 16 2g ipod touch owner but am a little confused over something. The 8 gb nano holds 2,000 songs and the 8 gb touch holds 1,750 songs. The 16 gb nano holds 4,000 songs and the 16 ipod touch holds 3, 500 songs. Shouldn't it only be about 200 songs and not 500? Not trying to complain, I just thought that was a sizable difference. Amy