scamp, if your happy with your b4, and it is working great for you at the moment, there isnt alot of point changing cars.
The X6 is a great car, much better than a B4, definately, but if your really happy with your b4, then is there really any point spending the money?
as the saying goes...: 'If it 'aint broke, dont fix it.'
the cars are fantastic, made me much faster, and they r easier to drive. but its down to your own driving style. some people may not like the cars. [
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if yoo are happy with your b4, stick with it.
hope this helps.
Andy