Sounds like an unfair comparison, comparing a $500 extra to a $3000 extra! I voted Side airbags - because that's what I got. In a normal single emergency stop situation the standard brakes are going to stop the car at the exact same rate as the premiums - and that rate is determined by the tyres and the surface. (Having said that premium brakes were on my wish list, but since I dont do track driving I couldnt justify the cost)