I am really surprised at the results! I have a 2004 toyota 4 runner with touchscreen nav with maps updated in 2009 and i just bought a 2011 335d with nav, and the bmw nav cant even find my parents house that has been there since the 60's!
I am EXTREMELY dissapointed in the address entry of the bmw, i cant simply enter a mailing address and have it find a place, so far the 2 locations i asked it to find as tests it couldnt find, and both were on major streets!
I will say, the 3d perspective map on the bmw nav LOOKS nicer than my 4 runners nav, but for useability and actual address location it doesnt hold a candle to my old 4 runners navigation