I am having a blast with Judge Dredd. The upper left flipper has three shots (two ramps and one target). The upper right flipper has three shots (one loop, one ramp, and one VUK). That's a total of six different shots with the upper flippers.
Contrast this with machines like High Speed where the upper flipper is almost entirely about hitting a single ramp.
What other machines have upper flippers with lots of different shots?