Perhaps a Mooney 201 (M20J)?
Why do I own a Mooney? - Australian Mooney Pilots Association
The majority of my hours have been in a Cessna 182. I have about 70 hours on type. I've been also wondering about what the next logical step would be. Given that a Cirrus SR is out of budget reach, the Mooney 201 looks promising. Quicker than the C182 and better on fuel.
I don't know what their general availability is like in Europe though.