Always hard to pick just 3 but the following would keep me satisfied for a long time.

Top Hand - Tests your ball skills like no other. Plenty of drop targets to shoot.

Firepower - Cold, hard and brutal, making you come for more. Sweetest thumpers ever and the most satisfying spinner shot with sound to kick ass.

Black Hole - Best lower playfield, good theme which has aged well. Long sweeping shots with no clutter.