nice bit of info there bud
going from this i think i would definetly fit them to mine!!! however harsh or harder they are i would value the sharper response steering wise!!
were they expensive? 
Not sure I would recommend them OT. They are very very harsh on the brakes! As I discovered today on the way to Wim. Roads round Chesham are very poor. BANG from the front as I hit the brakes over a not particularly broken bit of road surface, not good. That plastic spacer hammers the outside edge of the wishbone under heavy braking.I don't think it will take long for that plastic part to brake.

Wim reported a big toe discrepancy of -0.32 and -0.31 when it should be +0.05 which it now is, bang on! And camber of -2.13 and -2.42 prior to set up, which I am not surprised about as the car was nowhere near that far out before fitting m3 bushes when measured by spirit level and "rifle siting" the front wheels for line up with the rear. All makes sense given the offset spacer.
The guy at Wim said they where defo firmer than stock when levering with his trusty bar, but softer than Polly he had seen on other models.....
.....wonder if it's worth adjusting the spacer by grinding off some material between spacer and bush outside edge? Might make them less harsh but still keep some of the steering firmness....? :-/
Fairly easy to remove, grind on a bench grinder and refit. My Jack lifts high enough to slide ramps under the front wheels to make bolt re torqueing so much easier
