What should be my new phone!!!

Well, Yes I am little Geek on few technology stuffs, I bought the HT 3.2 GHz tech high end laptop when it was just release spending money that is not even its 30% worth, then i bought the iPod Video before it released in market thru eBay, bought the Cingular 8125, when it was the first phone with WiFi both b/g ..So i am thinking now to change my phone with new one .. Heres the shortlists -------------------- Microsoft oPhone Apple iPhone Cingular 3125