what's your budget? If you have limited funds here's my suggestions:

-Roland Juno-G
-Roland Fantom Xa
-Yamaha MO-6/MO-8
-Korg TR

These are all budget synths--that would actually do very well for new age music. The most expensive one on this list is the MO-8, which is like $1,500. The Juno-G, and Korg TR can be had for just under a grand ($999). The Roland Fantom Xa is like $1,300. All would work well for what you want, and are easy on your pocket.

If you're looking for arrangers to do this work, as other's mentioned Korg is probably the way to go. Again if funds are tight, consider the Korg PA-50 for $999. The PA's have Triton based sound engines.

Regards,
Squeak