How do all the iPod touches differ?
There are so many differences between the various models of iPods. Some iPods have cameras, while others don't; they memory also differs. Check out all their differences and similarities on support.apple.com/kb/HT1353.
what you mean homie?
There are many differences. but the fifth generation is the best. 6 rows of apps, light, great camera. i would defininitley suggest the fifth.