Unbelievable AC. When I started my initial with the RN it was Chipmunks then Bulldogs before getting near a chopper. As for the second donk that wasn't needed until OCU. Ironically the best pilots went Sea Harrier via the Hawk....so those guys didn't go multi engine until they joined Virgin
How starting on a 135 can be cost effective I don't know. Unless recruitment is so poor they don't intend to chop anyone and so by the time they get to Merlin or Wildcat the glass cockpit will be second nature.
Back to the OP...go Robinson. Just by their abundance, they're a safer bet for work after training.