Battery
Tested the battery today (07-11-2009 from 08:00 till 18:00)
Setup
*Active Sync enabled all day;
*3G only, no switching to H;
*Weather, Twitter, Stocks auto download every 1 hour;
*3,5 Hours of browsing with Opera;
*11 Calls, total of 34min talk;
*19 SMS got, 15 SMS sent;
*Formatted a 4GB SD card;
*15mins MSN;
*30mins playing with the phone (Showing it to my boss);
*Vibrate only;
*8 E-mails got, 2 E-mails sent;
From 100% to 61%, so in 10 hours use, battery dropped 39%

GPS is amazing, Installed TomTom7 and in 4sec 9 satellite fix in door!!!
To add to this discussion, i tested iGo8 on the HD2:
* Satellites indoor
HD2: 6 to 7.
BT GPS receiver ( Sirf I if i remember correctly, yes its old. i know ): 0
* Outside
HD2: 10 a 11
BT GPS Receiver: 6
* Behind Car Window ( note: This is anti heat glass crap, that interferes with GPS signals ).
HD2: 9 a 10
BT GPS Receiver: 5 a 6 ( but, only on "sweet" spots, if the receiver moves during driving, it will totally drop to 0 satellites ).
* Middle of the Car:
HD: 9 a 10 still
Did not test the BT Receiver in the middle of the Car
* Route calculation ( 180km route )
x50v: Several Seconds
HD2: Instant! No joke… Surprised the crap out off my father  
* Letting iGo8 run in fast demo drive mode ( at 1080km/h *lol*, no joke ).
HD2: Switching to task manager: 55 a 60% CPU usage when switching to it for a second, and then 2 a 3% CPU usage. Switching front & back shows the exact same pattern, and iGo8 was still "driving" or "flying" along without any problem. Did the correct distance relative to the time needed to switch.