67k I think
I'd say got the F6, seems like the most practical option for what you need it for.
I went through a similar thing about 7 months ago, not with the same budget though. I tested liberty B4's, Audi S3's, C36 AMG's, Audi A6's, and eventually went with a VXII Clubsport. I loved the AMG, but it was too old, and really liked the S3 too, but it wasn't really practical for what I wanted the car for unfortunately.