Looking to buy an X5

[drewbagel423]

first post!

hi everyone... im considering picking up a used X5, been reading through some of the threads, and i just have a few questions:

is there anything to look out for? problems with the car? known issues after certain mileages?
are any years are better than others?

what mods are out there?
i'm mostly concerned with looks: wheels, body, interior

i would love to get angel eyes and xenons, i think i heard somewhere that the '03+ headlights need to be baked in order to open them for angel eyes, is this true? would i be better off buying an '02-?

i love the look of the painted spoiler underneath the exhaust, is that the 4.8 kit?

what are some good websites to start with?

thanks in advance!