(525s + 530s) and high-performance cars (540s + M5)...differentials not as wide re 540s and M5s, now that the premiums charged by dealers have come down or have been eliminated altogether (on an msrp to msrp basis, the M5 is a truly supurb buy)...overall increase in sales in light of 9.11 and a mortibund economy could be a 'security-blanket' or a 'go-for-broke-for-we-all...tomorrow' reaction, or perhaps the great bmw lease/purchase rates.