i won't run without one, just saved my azz last week, again
clipped a hidden rock in 4th WOT, the stabilizer kicked in and prevented the bars from being ripped from my hands and a certain crash
I don't run a machine without one. They are well worth the money. Just make sure to get a rebuildable one so it can be serviced when needed.They feel even better with an anti vibe stem. Just sayin