Was treated professinal, they had a better selection of coupes than did BMW North, and also gave me a much better deal on the trade than North was willing to talk about.
Sales people at both were professionl and even the 'Sales Manager' at Momentum was not bad.
Since I work by Momentum I10 and live by North I may share my service work and see how they do.
Email me if you want more details or a good deal on the M3 goodies I took of the '98 before I traded it.