Tchaikovsky, Grieg, Vangelis, Jean Michel Jarre.... and a few others.
Don't really have a special reason other than I find them relaxing to listen to and I can't help wanting to hum along. I first heard Grieg from something on an old 78 record we had about the place when I was about 9. It got broke, and I never managed to find another copy since I can't remember what it was called
Wow it amazes me how many artists have been listed I have never heard of...
John williams yes is the classic example of a pro bono professional but a lot of these names I am completely and utterly in the dark with
-Arjen Anthony Lucassen's Ayreon project
-Ralph Von Williams
-Iannis Xenakis (Actually I hate mathmatics so I would never really listen to his music but still curious)
-Jean Michel Jarre
The others such as danny elfman you have to be living under a rock to not know him, Thomas Newman and James Horner as well.
Still the list of those I have that you all brought up have intrigued me greatly please add a few links so I may check out each composer.
I don't have a personal favorite, though there are many composers I enjoy listening to:
Johann Sebastian Bach
Ludwig van Beethoven
Andrew Lloyd Webber