I started out with Blade SR and really like the concept of a beginners CP heli with beginners settings in the radio but the SR's direct motor driven tail is a big disappointment. Very unreliable. Something like the Align 450 Plus RTF or Blade 450 3D RTF would probably be better. It's a big step up though. Building one of the 450 kits is another option but there is a steep learning curve on setup. The information is out there for those willing.
What ever choice is ultimately made simulator time is important and should probably be the first investment to see if you really want to pursue helicopters.