You could go for the Siai Marchetti SF260. I believe there is one for sale currently at about £120k. Some editions of the Falco F8L were also approved for aerobatics, but they come up for sale so rarely. Otherwise the Grobs used for the elementary flight training for the RAF are aerobatic. The Beagle Pup 150 is a nice fly. I have a few hours on it though never aeroed it. It is said to be better than the Bulldog as it is lighter. There is also a Zlin model which has a nose wheel and is aero capable, though cannot remember which one.
I suppose the question is why you would particulary want a tricycle geared aircraft for aeros when there are so many good tail wheel ones available. If you can learn aeros then the tailwheel aspect should not present a problem.