My go to kitchen knife, Global Santoku:
http://www.amazon.com/Global-G-48-Santoku-Hollow-Ground/dp/B00081GAQY/ref=sr_1_3?ie=UTF8&qid=1374513472&sr=8-3&keywords=global+knivesIf you spend hours prepping w/your knife, handle comfort, angle, grip, texture are your concerns. Edge is just maintenance.
If you want to spend more, step up to Shin knives.
Why would you want a folding kitchen knife?