Robin 
2007 BMW Z4 Convertible 3.0si 2dr Convertible (3.0L 6cyl 6M)
Not a Suitable 5-series Replacement
 A good 2nd car for fun in the sun, with great looks and handling, but not a suitable replacement for my 2000 540i. The wind noise on the highway and comfort on bumpy roads is not very good, so consider this for daily travel.  More of a weekend "lets have fun" car.  Personally I think our 2003 Z4's 5-speed shifted smoother and quicker and its ride was not so harsh (as I recall), so I'm a bit disappointed by this 2007 Z4. The 6-speed shifting bothers me the most, since I do a lot of it! (Oh well.) 