While sitting in a tech's room for 8 weeks (only negative thing) my LM4C GBBR went through a bit of a transformation. Its a little heavier and kicks like a .22 LR or so now. Everyone at the store where I had it worked on kept saying how much they loved it and how badass it was.
It was kind of like having someone rave about your kid, I guess? (I don't have any kids, so what do I know?)