Iphone 4 or Ipod touch 4g?

[Yee]

Iphone 4 or Ipod touch 4g?
Okay,lets get this things sorted! I am currently using an Iphone 4,so I wanted to know is Ipod touch 4g good to use? And which 1 is better. Exclude the Ipod touch 4g which can't call or message. So does the Iphone 4 have a better quality or the Ipod touch 4g? If its the Ipod touch 4g is better,I'll sell away my Iphone 4 and buy a Ipod touch 4g. Since I have ''Galaxy Ace and HTC Desire C'' as my spare phone! SO PLEASE PLEASE PLEASE TELL ME THE GOOD AND THE BAD !~!!!!! I know that Ipod Touch 4G can't call. So PLS PLS PLS TELL ME THE GOOD AND BAD BOUT BOTH OF THE IPHONE AND IPOD TOUCH 4G !!!!!! PLZ!!!!!