I drove the 535 again and really liked it. Wife loved it too. It's close to the 330xi in pickup so...I got it. Dealer gave me $19K for the 525 but wouldn't budge on the 535 at 33,800. What I found was that the 535 is much tighter feeling than the 525 (46K vs 71K miles but I didn't think the difference would be that much). So I burned half a tank on Sunday and Monday on the back roads heading along lake Winnepasokee and it was awesome. Very happy with this car. The 550 was nice but, on second drive, the 535 was just a little bit nicer.

Thanks all for the great input!

Tom