Thank you all
After reading all of the threads, I guess the BMW 528I seems a bit more reliable than the V8, which is very good news for me.
I was looking at Mercedes sedan but not easy to find a five speed so I ended up with the 528I BMW.
Compare the 528I to my 16V, it is not as fun but atleast the A/C is working.
Once again thank you all for your opinions. Lookslike there are more pros then cons when it comes to BMW.