I just looked on Controller for Jet Box's and R-44's....twice as many Robinsons for sale as Bells.....and the prices for a newer Robinson is not far off from that for a upper middle priced Jet Box.
That answers any question I might have had on which would be spending my money upon.....beginning with Piston versus Turbiine and overall robustness.
If you are all about cheap then I suppose you would see it differently than I do.