i have the v1 in the x5 and the m3, and my brother has the passport in his 330, and they both pick up signals at about the same time...
v1 is nice because of its lifetime upgrade policy, i just sent mine in for POP.
v1!

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2008 E82 135is JB2 Alpine White / Lemon
2008 E90 335i JB2 Monaco Blue/Grey
2007 E85 M Roadster Black/Black
2006 E60 550 w/ M Kit Silver/Black
2003 E46 M3 SMG w/ VMR V715 19's Blue/Black