Well now, this one isn't all that hard.....fly too high and you miss lots.....fly too fast and you miss some of the interesting stuff......fly without some aerobatic performance and you will get bored.......
........after catching a performance ride in a Vans RV-6 last year, I think something along the lines of this type as being very acceptable for me.....maybe even a Harmon Rocket......The RV-6 is a good cross country machine, good speed, very light on the wing and very maneuverable......Yup, I think I may just like one, like this.....

RV-6 Performance
Triple spec numbers are for 150 hp, 160 hp, 180 hp respectively.....
Speed - Solo Weight
Top Speed 198 mph 202 mph 210 mph
Cruise [75% @ 8000 ft] 187 mph 191 mph 199 mph
Cruise [55% @ 8000 ft] 169 mph 172 mph 179 mph
Stall Speed 49 mph 49 mph 49 mph
Speed - Gross Weight
Top Speed 197 mph 201 mph 209 mph
Cruise [75% @ 8000 ft] 186 mph 190 mph 198 mph
Cruise [55% @ 8000 ft] 168 mph 171 mph 178 mph
Stall Speed 55 mph 55 mph 55 mph
Ground Performance - Solo Weight
Takeoff Distance 325 ft 300 ft 270 ft
Landing Distance 300 ft 300 ft 300 ft
Ground Performance - Gross Weight
Takeoff Distance 550 ft 535 ft 475 ft
Landing Distance 500 ft 500 ft 500 ft
Climb/Ceiling - Solo Weight
Rate of Climb 1,710 fpm 1,900 fpm 2,275 fpm
Ceiling 19,300 ft 21,500 ft 25,700 ft
Climb/Ceiling - Gross Weight
Rate of Climb 1,355 fpm 1,500 fpm 1,790 fpm
Ceiling 15,800 ft 17,400 ft 20,800 ft
Range
Range [75% @ 8000 ft] 775 sm 775 sm 720 sm
Range [55% @ 8000 ft] 950 sm 950 sm 880 sm