HTC G1

the android does push exactally the same as the blackberry do i use both device (also some of the code in the android is from RIM push code) i prefer the android cause you can do tons more on the device compared to the blackberry. i will admit the battery suck but i also have a spare battery charged up in my walet.
to help get better battery life u can root your phone or just install performance manager i think its like a buck on the market or so...