I recently had to hand back a smartphone after an extended evaluation. The thing is, I get bored of new technology. At the time I first received it the SonyEricsson M600i certainly looked impressive.
Sadly, while it offered high speed 3G Internet, it did not support Wi-Fi, limiting its use for cost-effective high-speed mobile Internet access. What I found most annoying, however, was that the device lacked some of the basic applications found on the equivalent MS product. Why should I have to pay $45 for QuickOffice Premier when Windows Mobile devices have Pocket Office for free? So the M600i has been sitting in a draw for the last six months - pretty much unused.
Instead I found salvation in the Windows Mobile-powered O2 XDA Orbit.
It's not perfect. I have said previously that I dislike the fact that Windows-based mobile phones don't work properly as phone, but Microsoft will get this right one day. When that day comes, SonyEricsson better watch out...Symbian-powered devices like the M600i will be doomed.