IPod touch 4g or iPhone 3GS/4G?

Just get a iphone 4g but keep you black jack with you and after you get the iphone 4 call then tell them you are not going to use iphone anymore and go back to your old plan (you have to do this in firstweek) then go on google you can change your apn setting on iphone and get data plan for or do not get data plan just stick your sim back to iphone and you do not have to get data plan. Because iphone can work without data plan they just tell you to have to have data plan to rip you off