So, guys i have a SERO plan from sprint (i.e. 500 mins/month+ unlimited data+unlimited text+ free weekends mins. for only $30 per month). I have been with them for almost 4 years now.

 I fell in love with Iphone the time it was announced. I have been controlling my urge not to get an Iphone and just stick with my awesome SERO plan, but its just getting unbearable these days. I know iphone would at least cost me $70 a month and i do not get to use unlimited data+text, but i still want to go for an IPHONE. On the other hand i feel i would regret my decision of getting an iphone as i know it only a "fad" these days.

Has anyone given up their SERO plan for an Iphone? Is it a good decision in a long term provided that it costs more than SERO? Help!!!