I financed my last two E90s from BMWFS. I have no complaints here and the rate wast at 1.9%. My new car, the dealer decided to finance through Citizens because of cheaper rates. (They said BMWFS has crazy high rates right now).
2008 335xi E90 Alpine White - Sold - 8/19/10
> 2011 335xi E90 Jet Black - Sold - 6/27/12 > 2012 335IS E92 Crimson Red - Current