I think that if you have a steel bumper on there you should worry more about someone elses ride being destroyed. Basically it was said earlier in another way. THere car is going to crumple under the impact while yours will remain with minimal damage. you are going to feel more residual energy but a low impact should not be of much concern. Either way if you get hit you are going to be feeling something.

think about the poor shmuck who you would rearend if you had a solid steel front bumper. odds are you are going to take the top off of a car that sets low <img src="/forums/images/graemlins/scared.gif" alt="" /> <img src="/forums/images/graemlins/shiner.gif" alt="" /> I.E. mazda miata

just my 2 cents