After you learn on a SIM the Blade 400 is a great bird because it comes RTF with a DX6i, yes the TREX is a good one, but if you want the mini size like the blade 400 you will need to step up to a TREX 450.

If you want to save the $ for your first CP Heli go Blade 400, I have enjoyed mine as this is what I have been learning on and still am
The bigger the bird the more stable and precise but also the price goes up too :shrug: