Hello Calman and thanks for the advice. It is quite hard to choose and even on the site you sent me, the guy also speaks highly of the Trex as follows:
"The Align T-Rex 450 was certainly high on the list; in fact, if I was purchasing a 400 series heli just for me, the T-Rex would be the hands down winner.

The one thing i have decided is to wait until i have gotten good enough with what i have, the CX3 and the Msr, as well as gotten better hovering a Collective Pitch heli on the simulator. That will save me a lot of trouble and parts in the long run!! I leave in the bahamas and we have a hard time getting any parts, which we pay lots of duty on anyway.

I have ordered a few books to understand better the theory behind all this.
Thanks again for the advices!
rava