Comparison of the three is like Apples and Oranges. It also depends on the VIPS, other factors, Location, are you in Denver 5000' or Los Angeles
Having played with all those toys I think Bell has the best ship in the 407. Its really sweet when its got all the VIP stuff. Also having done tours. I dont think you want to mix a nice VIP ship with tourists. They are by nature overweight and treat your euipment like its a cattle car. For Tours and Tourists, Eurocopter has it best. You can do a lot ot one of those things without all the Bell, Bells and whistles going off.
Best to figure out exactly what you need and you will certainly find it between one of those aircraft. You might also through in the EC-130. When money is no object, folks dont object to spending it......