If acro is your thing...I vote for Dillingham.
Gain altitude in the ridge, fly over the ocean and make yourself sick, fly back to the ridge to gain altitude...rinse and repeat...rinse and repeat...rinse and repeat.

Since I have been flying in wave at Minden for twenty years, caution with acro. High altitudes get you into the coffin corner especially with the higher speeds needed to maintain inverted flight, and rotor turbulance can catch you at any altitude. As always in the United States of America...the pilot in command is responsible.

Having said all that, my basic minimum requirement is "a loop a day."