Wow, that's an excellent benchmark result for the Crucial m4!
BTW, Samsung's recovery app can also clone drives, though I'm not sure the results would have been any different. As for TRIM on the other partitions, my stock machine lists 4 partitions under the Optimize option, with 1 partition described as "optimization not available". Mine does not have the Intel hibernation partition, yours might? The C drive would be the only one where deletes are common (again assuming you don't have a hibernation partition), so TRIM wouldn't have much of an effect on the recovery partitions which aren't written to.