Bell407 Vs 350b2 in General Helicopter Operations Posted October 21, 2009 · Report reply New B3's are dual hydraulics and dual FADEC. The 407 has no redundant systems. The idea of dual hydraulics I like, it's the As350 weak spot. DOM, if the the fellow still has that B3 send me PM with contact.Appreciated. The L4 is the same price as a 407 almost, there a few for sale in Ireland. It's great machine form what I have been told and cheap to run. Won't lift as much as the 407 though. It's a really tough call to get a all round everything.