Bell with twin pack?
You're little behind the times my friend, the "Bell with twin pack" as you call it could be deemed to have been the 427, if you've flown it you'll know its far from just a twin engine Bell.
From what I hear from my colleagues in the US this aircraft will outsurpass the EC155 by a long way with its avionics and vertical lift capacity.
My only "criticism" of the Bell 427 is the lack of width in the pax cabin but, to fly, it goes like .......!