I had the opportunity to try out a fantom Xa that I had to sell for a guitar store that had no clue what to do with it. Heres the quick rundown:
Bass: Muddy
Sequencer: Stupid
Build Quality: Mattel
Sample edit: Useless
Sounds: has some excellent pads.

If trance is all you will ever do, a software synth is more than enough. Other than that, you'll end up with a room full of gear. So start with a software program and learn it.

If you want more gear, get more. You won't know what you need until you are sure of what you want. That is in fact the best piece of advice I have to give.