claudiu, I think perhaps you need to listen to a few of the people on this thread that counsel patience and practice.
From reading many (many!) of your constant posts asking for desperately needed help with this or that basic function, and your admission of being quite young, it is fairly obvious that, although you claim to have no problem playing a piano, you ARE very new to using synths and arrangers.
As with anyone learning a new skill, practice and familiarity with one piece of equipment will help you build the skills to master other gear later on. If you shotgun yourself with an ever-changing equipment list, you will have a hard time ever learning anything during the constant learning curve. You CAN do great things with your VA76 (trance may not be the best it's good at, but many other styles are right up it's alley), and trust me, you are going to find a MotifES FAR more complicated than it is.
Imagine you have a younger brother who is just starting out learning the piano. But he is constantly bombarding you with questions about piano repertoire that is FAR beyond his skills. Do you waste your time trying to answer his questions with information he cannot comprehend, or do you counsel him to slow down, do his practice and scales, and in time he will be able to play more advanced work?
You have to understand that your musical heroes of ANY style did not achieve their greatness over-night. They spent years learning their craft and their equipment, and no purchase will compensate for that. In their earlier years, probably most of them would have begged for an instrument as good as you already have. What they did was work with what they had, learned it's ins and outs, and developed the skills to master later equipment they would eventually use.
Perhaps it is time for you to focus on what MUSICALLY you wish to achieve, rather than obsess about the equipment you have or would like. Make a list of the styles of music you would like to learn, and then pick the one piece of equipment that will do them all adequately, rather than salivating over each piece of specialized gear that is best at one thing.
If you wish to do trance and electronica, I personally would recommend going the software route, and use your VA76 for bread and butter sounds, and enjoy it's superb action for playing the computer sounds. After all, you DO play piano and probably appreciate a good action!
Anyway, keep at it, but be prepared to put the years in, like everyone else..............
_________________________
An arranger is just a tool. What matters is what you build with it..!