Just turned off my iPhone 3GS for good!
I've been a power user of the iPhone since they came out, don't play games on the device, but use most of the day to manage customer calls, sending proposals and answering support questions. I do over 5gb a month in data on my iPhone so usage is high.
Since I use all of the Google services, corporate APPS, calendars, invites to meetings, Picassa, Google voice and more I'm sure I just wanted a device to help me manage customer service in a more professional way while on the run.
I can tell you that many people (customers) have reported that I am much clearer sounding too... this is really nice to hear because even when you are out and about the client can hear me clearly and that is better service.
This phone is just fantastic and won't be going back to the iPhone. Don't get me wrong the iPhone is terrific, but as a Google Apps power user this phone is a dream. I only miss one app from the iPhone, but all others were in the marketplace that I needed... Amazon, FlyCast, AP, Timer, Domain Search, etc... and certainly all the Google apps that are not on the iPhone were there too so I was in heaven.
My service here is MUCH better than AT&T and is much quicker on 2g and WIFI too... the taptic feedback with the keyboard allows me to type much faster then on the iPhone... honestly the keyboard for me is much better too.
I highly suggest this phone and think most iPhone users who are POWER GOOGLE users will truly like this device.
The screen in the sun next to my iPhone was almost the same visibility. In fact it seemed that the Nexus was even a bit clearer??
My 2 Cents.
The keyboard is so good that the dictation not so important to me right now.
Also copy all of my music to a card then drop into the phone vs. going through iTunes is fantastic. To me that in itself is much more like a computer.
I would say that my kid will miss my iPhone so he'll have to use an iPod touch. To him it's a gaming "computer"... I bet once I try gaming on the Nexus that experience will be great too.