Simulators for Acrobatics?

I would like to find a simulator that will do acrobatics in a more or less
realistic manner. When i was flying the real ones the most fun that I had
was doing acrobatics. I have bought every version of MS Flight Sim and
have taken them off the machine after a few tries, because they don't, IMO,
fly like a real plane especially in any stall maneuvers. Flight Unlimited
1 did a pretty good job, but I won¢t run on my present machine Windows XP.

Perhaps someone out there knows of other simulators that do better with
acrobatics.

Thanks in advance,

JakeInHartsel