I have been playing for about four years or so, and have owned Nords, Arps, Rolands, and Ensoniqs. I love the sound of it and the ease of sound creation. The only really comparable products are the Rhodes Chroma, Sequential Circuits T8 and modern synths like the Alesis Andromeda and Jomox Sunsyn. This synth really helps me to make the music I want. In the end, the Xpander is one of the best analog synths ever made, and I hope to have mine for a long, long time.
Modulation is a breeze, and complex modulations can be built quickly and easy.
I am a HUGE fan of the tracking generator. What it does is re-scale and modulation signal. The most incredible thing. I was original owner, with a twin and Matrix-12. Sold others, kept one.