europa
backpacker has a good point.
The europa takes off in about 200-300m and flies c110-120 knots on average.Nice handling too in the air. Mono-wheel a bit tricky on ground, but I have only had 5-10 hours practice
You can put it on a trailer and it takes normal unleaded petrol, which is cheaper than 100ll.
The rotax 912 100hp turbo is very good for performance.
There are some available ready built for private sale.
Or for something a little more beefy, how about a Cessna 182.