Bachus, first.....that was the longest demo I had to listen to.. ..Hey I grew up with Dean, Elvis and Frank

I have a G70 that pretty much can duplicate what I heard on the demo..I think young players overall, don't have any idea what some arranger keyboards can do...Is it practical for a "trance" player to buy a $3,000 arranger...maybe not, there are other options to produce this type of "music".
.Maybe a cheap controller and a DAW with VST's and loops..is all you need.

Let me explain what I know to be true..
Depending on the waveform (PCM)..selecting a synth sound on a G70 or E80 (there are many rhythmic looped synth sounds, on board).
Although they don't send out to midi, the sliders, and other controls are flexible enough to control the internal sounds.

The sliders control CS1, vibrato,delay, rate, dept, attack , decay, release, cutoff, and resonance..for any sound.(in realtime)
On looped samples the rate is very effective for pulsating of sounds, and the filter responds well too..
It doesn't end with the sliders...you have D-beam control, pitch and mod control..and most important, great insert effects that can be controlled in real time..
Now that I got your attention...You can layer 6 synth sounds that can respond to these controls..crossfades, and aftertouch too.

If you are a synth guy, there is plenty to make you happy with a 7 year old arranger..