i'd steer clear if i were him. i used to work for a guy who has a couple of those things. yes, they are a pig to fly, and if you don't mind the blades falling off then maybe you will like it. we did a lot of repetative lifting with the 600, (530, 500D's also) and they didn't seem to handle it very well.
he had a driver go to L.A to pick up the 600's they unloaded and the explanation the LAPD guy as to why they are getting rid of them included the reasons that they don't lift anything, they have no legs, they are maintenance pigs, and they are "junk". not my words, just what i was told. and now there are the product support issues.
even my boss admitted that one of the only reasons he was actually successful with the 600 was because it looked cool. they do look cool but unless that is the only reason for considering a 600, i'd go for something else, after all there must be areson why they didn't sell very many in the first place.