Not knowing much about the subject, my inclination would be to go for something used by various aerobatic teams, such as the
Red Arrows, the
Thunderbirds or the
Roulettes. These all seem to be 2-seater trainers with good handling, and the
T-38 Talon is supposedly extra economical.
If you need more than 1 passenger though, you could browse this
list of light transports by passenger capacity.