Which motor mounts?

[Captain KRM P5]

AWR sells 2 in a set, front and back it seems. But according to Mitch (Protege5Online) Mazda Motorsports sells a set of 3? Anyone have any suggestions as to which would be better? Would a third mount be worth the extra cost?

 

[macklum]

when I recieved my motor mounts from MazdaMotorsports ,i only got the front and rear mount . I only have the front in right now .I hope to put the front in soon as i can get the car on a hoist .