There's lot's of conjecture about how much safer a twin is. So does anyone have any real numbers to show how much safer a twin is ?? I'm talking true engine failures that aren't related to fuel starvation, accessories, etc. I believe Rotor & Wing did one, and showed a 4% difference.
I wish people would stop trying to compare helicopter flying and driving a car. When everyone gets an a/c then we can compare them. You are far more likely to need a side impact airbag in your car than a second engine in a helicopter. Yes there are operations where twins do better. I won't go very far from shore in a single, and for constant work over a built up area they are preferred. With proper maintenance, and a good daily inspection a single is as safe as atwin, but if you feel safer in a twin then that's okay. I don't have a problem flying a single engined helicopter. I can count on one hand the number of people I know who've had an engine failure. I had a snow ingestion decel, but the auto re-light worked. I also know a similar number who have had serious problems in a twin.
It all ends up as what costs more, and twins do. We would all love to fly twins in all ops, heck what is an emergency in a single, isn't all that urgent in a twin. But is it worth a 50% premium ?? Only you can make that descision, oh and your client.
Cheers