A head-to-head match of the HTC Touch Diamond versus the Samsung i900 Omnia. Both phones manhandled for an extended time and broke down the UI, hardware, features and overall usability.

HTC Touch Diamond

[HTC Touch Diamond over Samsung i900 Omnia]:

• VGA display (2.8-inch, 480 x 640 pixels)
• TouchFLO 3D Home screen — better than Omnia’s Touchwiz UI
• Nicer design
• More compact body
• Lighter weight
• Active magnetic stylus — Omnia has no stylus slot
• Touch-sensitive scroll wheel — better than Omnia’s optical joystick
• Better sunlight legibility
• Standard miniUSB slot — opposed to Samsung’s proprietary custom plus
• Dedicated graphics chip with 64MB memory
• Comes with the amusing Teeter game (uses the accelerometer)
• Has pre-installed YouTube client and MP3 Trimmer application for ringtones
• Better video playback performance

Samsung i900 Omnia

[Samsung i900 Omnia over HTC Touch Diamond]:

• Bigger, though lower-res display (3.2″, 240 x 400 pixels)
• Has a better, more solid build and finish
• Almost double battery life
• Better CPU performance — by a nice margin according to software benchmarks
• Quad-band GSM support — Diamond has two versions to cover all the four bands
• microSD card slot — Diamond has none
• 8 or 16 GB of storage memory — Diamond has 4GB
• Much better 5 megapixel camera (better processing, higher resolution, face and smile detection, geotagging)
• TV out — Diamond lacks tv-out
• Landscape QWERTY keyboard — Diamond has one but only in browser
• Auto screen rotation is available in all applications and can be switched off
• Comes with DivX video support — Diamond has none, but DivX players can be installed
• Has pre-installed a custom Alarms app, a Video editor and a unit converter

[The deeper match continued here..]