I would personally have a MK5 Golf Gti out of the lot, Girlfriend got one with all options ticked and it's one of those cars I enjoy driving. whether it's cruising or want to drive quick, aswell as being presentable. Easy to mod with nice gains.

Never seen them for 6.5k, prices are much higher.

For your budget it would have to be out of a Civic Type R, or Audi S3