I totally understand the desire for the processed stuff, but I had to back away from the fat free/low fat replacements for the 'real' stuff. There might be less fat, but generally these things are higher in sugar and sodium. Something has to make up the flavor and texture when they remove the fat from these things!
I've seriously tried to find healthier alternatives that still give me the same satisfaction. My latest thing is homemade hummus and grain chips. I get Food Should Taste Good brand multigrain chips from Costco and make a double batch of hummus every week. If you've never made hummus it's a snap in a food processor and I'd be happy to share my easy recipe. I get the chip and dip satisfaction as well as the salty crunch, but I get the added benefit of knowing it's healthy, it's high in fiber so it keeps me full longer, and I know I'm doing something good for my body and soul!