I have it on my Plus 8...
Reasons for:
1. It is a powerful de-mister and dehumidifier when the hood is up.
2. It keeps feet and legs cool in summer.
Reasons against:
1. It isn't climate control, so not really controllable, it is either on or off.
2. MMC charge a lot for it.
Tend to agree with Martin (Deano), but it all depends on how much wet spring/summer/autumn driving you will do hood up.
