I would recommend Liberty Antigens. Very light, soft, rockered and have a bamboo core which I'm a big fan of. They butter like crazy, here I have a picture from two years ago
You can find them under $300. You'll have to wax them often though.
Other not very expensive buttery skis I can think of now - Atomic Punx 2012-13, K2 Domain/Press, Line Anthem/TC