Four progressive electronic musicians

2. Kitaro

3. Jean Michel Jarre

4. Klaus Schulze

Also a worthy mention for Austrian keyboard wizard, Gandalf. 

2. Vangelis

3. Klaus Schulze

4. Kitaro

Sad that Klaus Schulze is not listened to or appreciated as much as all the others. In terms of experimentation and talent, his guts to play live, and not repeat himself is important and his changes and development, specially in the 1970's and then 1980's is phenomenal ... but sadly for the most part he was only available as an IMPORT in those days, and they were $20 dollars each already .... but at least the music was far out.

Even if one far prefer one to the others (I love albums by all), it might be neat if people would list their favourite albums from each artist. I went with Schulze, but I love music from all of these.  And I know some who might, say love Vangelis Blade Runner soundtrack but dislike or are unfamiliar with some of his earlier work.  This can help to gauge overall familiarity as well what specific works appeal generally and from one's favourite (if one has one).  Whatever out specific tastes, one things I guess many of us have in common here is that we are music nerds/geeks (and more power to us). ;)

With Jarre I adore both Oxygene and Equinoxe.  

Kitaro I was especially huge on a  teenager and in my early to mid 20s.  Ten Kai and Oasis are fantasitic, but I also love all of the Silk Road ones.  Kitaro is one of the very few instrumental music acts I introduced my wife to that she also loved.  Maybe that we met in Japan plays some part in that.

With Klaus Schulze, whom I voted for, all of 70s albums are very meaningful to me.  Mirage is a particular special one to me.  Timewind, Moondawn, and Cyborg are some others that have meant  a lot to me.

Vangelis is another that I was very into as a child (80s) and young man-child (90s) and I continue to love.  I started off liking his 80s soundtrack music (The Bounty especially) and tend to gravitate the most to his 70s period now..  I adore The Dragon (even if "unofficial") and really like Hypothesis.  I adore Earth.  And L'apolcalypse des animaux, Albedo 0.39 and Spiral are some other favourites.

I've listened to every album by every artist in this poll, so from my point of view, these are the best four electronic artists you could have chosen.