I personally prefer to fill the chips with touch up paint. Wetsand the spots with 1000 then 2000 grit sandpaper and polish it out. But I won't recommend that to anyone that doesn't know what they're doing.
I just removed some scratches that were caught by my finger nail by doing it this way yesterday. I backed into a garbage can a while ago and just got it taken care of earlier this week. I have the langka system and wasn't very fond of it. I am however going to be trying the Dr. Colorchip system this summer.