Tayside Aviation operates the G115 D2 at Dundee. Inverted fuel and oil systems, slow roll rate, no radio nav gear except a basic GPS. Good for basic/standard aeros, reasonable touring potential but the biggest problem is that there are only about 6 in existence and Tayside owns 5 of them!
My choice would be a Firefly M260
Swift Aircraft | Firefly Aircraft but if insurance is too much then maybe not - but will it be any cheaper on other aerobatic tourers?