About four months ago I went with the recommendation of a slash bumper and I couldn't be happier. After rebuilding the diff yesterday and a couple other problems I was finally able to take it out for a run.
I hit a telephone pole head on at nearly full speed. I tried turning but that didn't seem to work so I hit the brakes.

I was able to continue going after a quick look. No broken parts!
The aluminum bulkhead most likely helped but the bumper held up.