Do u really know the disadvantages of iPhone? I personally used it. But I advise u take iPod touch and get cheap phone to continue making calls.
iPod touch 32gb Vs iPhone 3Gs 32gb.

Price itouch 32gb= Rm1199.00
iPhone 3gs 32gb= Rm2990.00

price is already a so much different. Listern to me , save your money.

I am also 3gs user before. But finally I got my iPod touch 32gs and a Nikia 5800.