Plain edges look better (IMO), are easier to sharpen, cut nicer and are good for just about everything you would ever want to cut, even fibrous materials if you sharpen for that purpose ahead of time,
buuuuuuuuuuuutttttttttttt,
I like the combo edge, especially if the serrated section is small, about 1/3rd or less. A small section of serrations is always there for rope, poly cord, cardboard and sawing if/when needed. I really do not see how it adversly affects the rest of the blade's function for most functions. It may be harder to sharpen, but it's only a small section and it certainly does not need attention that often.
Having a small serrated section is almost like having two blades on the same knife (three if it's a tanto

); you can keep the forward section nice for, well, nice chores, and use the serrated part for the tough and not-so-nice stuff.
Carrying two (or more) knives certainly has it's place, but for a general purpose EDC, I'll take the combo edge.