~snip~ If you just wanna listen to music and play games then go for 4th which i dont suggest web browsing as much due to low ram. you can save some money and earpods is something you wouldn't miss.
I personally owned and sold 3 Ipod touch gen 4, two in black and one is white. Just keep getting back to it because there arent any good substitution for what it can do. Now with the 5th gen, you can kiss goodbye page refresh on Opera and useless camera. Although, many many games still not optimized for bigger screen. Its like playing games that didnt design to fit the screeen which could irretate some.