Maxflyer,
I had the same dilemna a while ago deciding which helicopter to learn.
In the UK, the choices are R22, S300, Bell47 and Enstrom 28(0). In the end I sought the advice of a lot of people and went for the Schweizer on the basis that I may go on to CPL. However, the problem with all the above machines except the R22 is that they are few and far between so unless you have a local school which can self-fly hire one of these machines to you, I would go for the ubiquitous Robbo if you will only be flying for pleasure.
Also consider that the Robinson is v. small and if you are larger than average, you may not find it comfortable!!!!! (not that I'm saying you are, you understand!!!)
Cheers
Whirlygig
PS I am happy with my decision!!!