407 has fadec 120 does not
407 has 135kt cruise, 120 is 115
407 full fuel plus 7 , 120 is full fuel plus three and a prayer
407 is real smooth, ever see the 120 instrument panel shake like its gona fall off?
old technology?
Dont think so.
Edit:
im not a bell boy as i said in an earlier post 90%of my flying is in french machines and over a thousand on the EC120, five hours in the 407 really opened my eyes!