I just upgraded my i500 to Mogul last week after closely comparing among iPhone, Helio Ocean, Mogul and Treo 755P. With all things considered and further motivated by the SERO's rediculous low rate, I have chosen the Mogul. There is no perfect phones out there and you have make compromises to settle on one which can best serve your needs. I don't think that any serious cell phone users can live without 3G network nowadays. iPhone's innovative UI is what industry should mimic and improve on. But UI alone is not the deciding factor for selecting a right phone for you, especially in the business world. The lack of 3G support, real keyboard, GPS, replaceable battery, ample applications, choice of carriers and open developing environment make iPhone a wrong choice for serious users.

HTC Vogue will arrive in coming months. It is an EVDO version of Touch. It is sort of like an iPhone with Mogul inside. TouchFLO makes a good start to mimic iPhone's navigation method. But it doesn't have iPhone's shortcomings. It even has 128mb RAM the Mogul lacks. That will be my dream phone for my future upgrades.