I found that Blackberry gave me the most battery life. Going 3 days with everything on and getting stuff.

If doing the same thing with N900, iPhone, HTC Desire, it would last only 1, maybe 1.5 days.

It's something with modern devices. More stuff are packed in, but batteries aren't keeping up. You got big screens, touch, 3g, wifi, gps, BT, media applications.......