I've just upgraded to a ChaCha and I’m very happy. Here's the pros & cons compared to my old phone.
+++ Keyboard makes typing much faster & way more accurate.
+++ Power key ok top, so does not accidentally turn on in pocket.
+++ WiFi hotspot!!
+++ Efficient push (on data & battery), regardless of how many push apps registered (Android 2.2 C2DM).
++ App2SD
++ Volume rocker does't accidentally get pressed when holding phone.
++ Camera illumination
++ Signal Boost (Maybe only on Orange UK?) - Can use WiFi for voice calls if you’re at home/work and you have poor signal.
+ More responsive
+ Cut & Paste is much easier, even without trackball.
+ Lock screen shortcuts: Open camera straight from lock screen!
+ Power saver when battery low.
+ Proximity sensor
+ Front camera
+ Less weight
+ Thinner
+ Battery is a bit better (even with push enabled) - Hero battery is 18mths old though.
? Micro USB
? No trackball - cursors & better copy/paste make up for this
- Wider
- Have to rotate screen for some apps.
- Smaller screen (Same resoluion, rotated):
- Status bar uses more of screen
- No trackball status LED (very bright on Hero). ChaCha uses top LED instead
- SD card under battery
-- Home screen has less space for widgets.
--- Orange UK ChaCha is full of bloatware so is quite short on memory.
