Love- tough choice here, so many things I love about my Berry, but the thing I think that sets BB apart from others is the speed and security of the e-mail push. No one else does it as well.
Hate- I have a 7100t, and the display tends to wash out in outdoor light- however later models ( 8700, 8100, et.al.) have corrected this very well, just need to get off my butt and upgrade.
Love/Hate- My Berry and I have an ambivalent relationship-if you get one, you will become hooked on it, at the expense of social relationships, work deadlines, etc.