Hello U lucky 4.6is owners

i'm considering buying a 4.6is 2003 from first owner, 89k km....sat nav, pneumatic suspension???!!! full...

please help me make a decision!

I'm worried about 2 things
1. pneumatic/air suspension self levelling etc
2. the infamous vanos problem...I've given up on a 2002M5 e39 because of this...Iactually lifted the hood on a warm engine and heard the vanos trouble "diesel" noise on this 65k beast...and read about all the problems and got scared..this was supposed to be a problem with early to 2001 model cars! how does this apply to the 4.6is...I've seen a Youtube link where I distinctly heard the clank clank noise on a 4.6is!!! what are the costs? or maybe this is just what it's got to sound like!

http://www.youtube.com/watch?v=d6n9Xw0BnrU

all help sincerely welcomed

thankU in advance and take care!

c'mon guys...give the newbie some advice...any advice!!!i'm like lookin and waiting and nothings hapening...sorry i'm impatient but understand...I want this car badly...U know hahahha...a BMW...Ive been driving a 540 manual and cant wait to get myself something like the x5