Believe it or not, I am aware that a 407 is a single and that the closest that Bell came to a twin 407 was the 206LT, which was a disaster.
And while singles do have a place, I don't think that place is over water, with passengers who have no say in what they fly in. I also don't think that is a place for twin engined helicopters where the second engine just takes you a bit further to the crash site.