Airliner - B767. I used to prefer the 757, but the ailerons on the 767 were stupendous. I rolled her on odd occasions in the sim, and I reckon you could do a fantastic air show sequence in a light one, right up until they pulled your licence!
Aerobatic - Yak 50 - best fun you can have with your clothes on.
Warbird - P-51D, no doubt for me. Spitfire is lovely, (not the 2-seat if there is someone in the boot), but I have never felt more at home in an aircraft that I have never flown before, and it gets better with every flight. And any aircraft that you can taxi with your elbow on the canopy rail gets my vote!!!