I had a M5 just NO. 63 is fun but my 55 is better

 

I test drove the E63 and since then had it changed my views on BMW... Unless you want to get a stick... Mercedes all the way...

 

I say go with the E63 all the way!!! I had an E60 M5 for a few months and ended up giving it back. I had all sorts of problems and the car definitely doesn't feel like a 500hp vehicle.

My vote goes for the immense low-end torque of the E63.