http://www.foodeasy.com/engsearch.html
http://hongkongfoodguide.com/eng/index.shtml
Try these sites to search for your criteria.

SOHO is the new hippie dining area in central Hong Kong.
http://www.hkstreet.com/central/elgin/elgin.htm

I've had a couple of good dinners at M at the Fringe, up the hill from Landmark in Central. http://www.m-onthebund.com/he/

Also, if you feel like splurging, Felix at the Peninsula is a great location. http://fasttrack.hongkong.peninsula.com/restaurants.html

Rich