Here was my mini-review (aka Touch/Touch Diamond comparison) posted over at Howard Forums
Benefits of the Diamond...
1) The Diamond is no more "complicated" than the Touch. If anything, they've moved some of the settings and stuff up to the "Touch" interface, as opposed to having to go into the Windows Mobile windows.
2) Both the units have the Windows Mobile 6.1 as the underlying OS, so you have similar base functionality.
3) The screen on the Diamond is a HUGE improvement over the Touch. I just had to use my Touch recently, and it's a joke compared to the Diamond. I've really noticed it when reading text.
4) The Diamond has
WiFi built in, which is nice if you have that available at home or at the office.
5) The light sensor is a plus for me... I find that I turned down the backlight at night on my Touch, and then if I tried to use the unit the next day in the light, it would be impossible to see to do anything. The Diamond automatically cranks up the brightness in situations like that. However, I think the screen is only marginally better in sunlight, although I haven't done a direct comparision.
6) The Diamond has an option, when you connect to a
PC, to operate in "Disk Mode", which should be faster than ActiveSync for copying files. Seemed to be when I tested it, although I haven't tried again lately.
For some of the downsides of the Diamond vs Touch...
1) I don't think the battery life is as long, but it's still early. More screen real-estate (in pixels), additional sensors to monitor all the time (light and accelerometer), and whatever else all seem to take their toll.
2) No microSD slot on the Diamond. It's got 4GB built in, but that's it, and it's not removable.
3) Glossy surfaces attract fingerprints. That extends to the button area on the bottom. The Touch didn't have that issue to the same degree.
Clint