Versed is used to induce medical comas in intensive care, I had it twice in the past year for a kidney biopsy and a cystoscopy along with fentanyl and I tripped balls for a few minutes, so don't take it as a indicator for all benzos, I am currently going through benzo weening right now from ativan and I tell you it really blows, I rather be coming off heroin and whatever the worst drug is at the same time lol. Xanax has the shortest half life, so the withdrawl will be worse than mine from the ativan. Xanax has about a 4-6 hour half life depending on metabolism, ativan is about 10, klonopin is about 30, valium is the longest at around 60-100 i believe. forgive my spelling.