For the ones with time enough, using the Ntsb's accident database will give you an idea of the numbers of accidents and also the prelim/factual reports.(ie. the causes)
Just as an example, I did a quick search on fatal accidents from 01.01.1980 to date on the Bell 206 series came up with 241 records and for Robinson 202 records. I don't have time to total up all the fatalities, so the ones interessted can do and come up with their own conclusion.
I don't say that this means the 206 is worse than the Robbiefamily, as you must take all factors into considerations to come up with a conclusion.
My experience, is that the people that bashes the diffrent helicopters (in this case the Robbies) usually don't have experience in them, and therefore I couldn't care less what they may have as an opinion.