I've gone through 550+mg of Etizolam over the past 6 months or so, also taking around 10 etizolam a day when anticipating something stressful.
In April I decided to go cold turkey and didn't experience many problems at all.
Insomnia was the primary withdrawal symptom; I didn't find the rebound anxiety overly bad, nothing debilitating. I did find that I got a little sweaty, standing up occasionally caused head-rushes and my coordination was ever so slightly off.
Overall, it just felt like a bad hang-over to me, or a bad stimulant experience. It cleared up completely within 2 days. I had some zolpidem which I took for sleep; so going cold turkey wasn't nearly as bad as I was expecting.
On the other hand, Phenibut, a chemical I wasn't even on for very long gave me a withdrawal which lasted close to 6 sleepless days and was a nightmare. I had to drink plenty of alcohol just to get through it and remain sane. Etizolam withdrawal is a cakewalk compared to Phenibut. (A chemical best avoided, imo).
I'd never be willing to go through Phenibut withdrawal again, whereas providing I have some back-up chemicals or taper off decently, Etizolam withdrawal gives me no trouble at all.
In fact, I'd say that of all drugs I've ever done, Etizolam has been the most beneficial to my life as a whole. It's made me a social person, ridded me of social-anxiety, helped get me a good job and even improved my diet since I find Etizolam useless on a full stomach, which resulted in me finally organizing my meal times more effectively.
I have nothing negative to say about Etizolam, that is until you wake up with plans, take etizolam and then doze off by mistake. It takes practise to avoid that,