Twins are no safer than singles.
I know your a guy who is all about statistics, but the whole "twins are no safer statistically" argument is crap. The last lol at the trends was years ago to my knowledge and there certainly hasn't been anything recently that I know of, since the major spike in single engine airframes. I would bet if you ran a study tomorrow and looked back over the past 5 years you would see that statistically twins are much safer. Spend 10 minutes looking at the NTSB crash records for that timeframe and tell me what the major of the crashes have been, you guessed it, single engine airframes, mostly A-Stars... Granted there is more of them out flying now, but I think the numbers are off and haven't been updated in a while...
Years ago our program had an incident while landing at their base, that had they not been in a twin it would have been 3 fatalities. While on final to their base, which was located on a pier extending into the inner harbor, they lost an engine. They were able to wave off the landing, take the second to max power, and safely perform a run on landing. Had it had been a single they would have plunged into the drink in the month of Feb and been gone before help ever showed up.
So if said scenario saved three lives of friends/co workers over the course of 5 years you can take the statistics and toss them.
End of the day there are people on each side of the argument, and they are entitled to their opinion, however most of those people work for single engine programs and that's what they tell themselves so they can sleep at night and feel safe. You might be able to perfectly balance a car on three wheels and have it work just fine, buy why not just add a forth wheels...?
Tigger you said it in your post, "deemed it too large and TOO EXPENSIVE". The foot print of an EC135 and say a 130 are almost identical so size is a non issue... If performed is a factor and superior in a single then why isn't the military or almost every single program who does SAR in singles...? All lip service. Cost is the factor, and like I said until programs continue to put a price on lives, more will die.
REMI I like the fact that IFR isn't an emergency to us on a routine basis, it does become an emergency in a single. The list of pluses can go on and on but at the end of the day people are going to have their own thoughts about the situation. That's fine, but given a choice I would bet the majority of providers in the industry would prefer a twin for multiple factors if their program game them a choice. One of the major issues is too many people are willing to over look red flags in the safety arena of certain programs, just so they can get the job, then wear their flight suit to the grocery store when they get off. I am not one of those people...