Any help is appreciated....

I'm considering/replacing my accord v6 coupe with a BMW 330I. Motor&trans on the accord is on the way out.

this is a 3rd car and I do not need a race car. I have a 996 turbo.

Im looking for used. Being i'm a car guy I do the work. Hence pulling a rear wheel motor and trans if needed is less difficult than my fwd accord.

Im looking for a automatic 6 cyl 2006 and up. I found one with about 72K on it.

For the folks that own a BMW 3 series what year is best ?
With regard to

1. 6cyl
2. Transmission

Any other pros or cons to consider ? thanks for the help... in advance